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2411.01276 | Pablo Ochoa Mr | Pablo Ochoa and Anal\'ia Silva | Nonlinear eigenvalue problems for a biharmonic operator in
Orlicz-Sobolev spaces | null | null | null | null | math.AP | http://creativecommons.org/publicdomain/zero/1.0/ | In this paper, we introduce a new higher-order Laplacian operator in the
framework of Orlicz-Sobolev spaces, the biharmonic g-Laplacian $$\Delta_g^2
u:=\Delta \left(\dfrac{g(|\Delta u|)}{|\Delta u|} \Delta u\right),$$ where
$g=G'$, with $G$ an N-function. This operator is a generalization of the so
called bi-harmonic Laplacian $\Delta^2$. Here, we also established basic
functional properties of $\Delta_g^2$, which can be applied to existence
results. Afterwards, we study the eigenvalues of $\Delta_g^2$, which depend on
normalisation conditions, due to the lack of homogeneity of the operator.
Finally, we study different nonlinear eigenvalue problems associated to
$\Delta_g^2$ and we show regimes where the corresponding spectrum concentrate
at $0$, $\infty$ or coincide with $(0, \infty)$.
| [
{
"version": "v1",
"created": "Sat, 2 Nov 2024 15:04:07 GMT"
}
] | 2024-11-05T00:00:00 | [
[
"Ochoa",
"Pablo",
""
],
[
"Silva",
"Analía",
""
]
] | |
2011.08011 | Jaydip Sen | Sidra Mehtab, Jaydip Sen and Subhasis Dasgupta | Robust Analysis of Stock Price Time Series Using CNN and LSTM-Based Deep
Learning Models | The paper is the accepted version of our work in the 4th IEEE
International Conference on Electronics, Communication, and Aerospace
Technology (ICECA'20), November 5 - 7, 2020, Coimbatore, INDIA, The paper
consists of 10 pages. It contains 12 figures and 8 tables | null | 10.1109/ICECA49313.2020.9297652 | null | q-fin.ST cs.LG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Prediction of stock price and stock price movement patterns has always been a
critical area of research. While the well-known efficient market hypothesis
rules out any possibility of accurate prediction of stock prices, there are
formal propositions in the literature demonstrating accurate modeling of the
predictive systems that can enable us to predict stock prices with a very high
level of accuracy. In this paper, we present a suite of deep learning-based
regression models that yields a very high level of accuracy in stock price
prediction. To build our predictive models, we use the historical stock price
data of a well-known company listed in the National Stock Exchange (NSE) of
India during the period December 31, 2012 to January 9, 2015. The stock prices
are recorded at five minutes intervals of time during each working day in a
week. Using these extremely granular stock price data, we build four
convolutional neural network (CNN) and five long- and short-term memory
(LSTM)-based deep learning models for accurate forecasting of the future stock
prices. We provide detailed results on the forecasting accuracies of all our
proposed models based on their execution time and their root mean square error
(RMSE) values.
| [
{
"version": "v1",
"created": "Sat, 7 Nov 2020 16:07:10 GMT"
},
{
"version": "v2",
"created": "Sat, 2 Jan 2021 08:04:43 GMT"
}
] | 2021-01-05T00:00:00 | [
[
"Mehtab",
"Sidra",
""
],
[
"Sen",
"Jaydip",
""
],
[
"Dasgupta",
"Subhasis",
""
]
] | |
1711.09447 | Marina Gonchenko | M. Gonchenko, S.V. Gonchenko, I. Ovsyannikov, and A. Vieiro | On local and global aspects of the 1:4 resonance in the conservative
cubic H\'enon maps | 21 pages, 13 figures | null | 10.1063/1.5022764 | null | math.DS | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the 1:4 resonance for the conservative cubic H\'enon maps
$\mathbf{C}_\pm$ with positive and negative cubic term. These maps show up
different bifurcation structures both for fixed points with eigenvalues $\pm i$
and for 4-periodic orbits. While for $\mathbf{C}_-$ the 1:4 resonance unfolding
has the so-called Arnold degeneracy (the first Birkhoff twist coefficient
equals (in absolute value) to the first resonant term coefficient), the map
$\mathbf{C}_+$ has a different type of degeneracy because the resonant term can
vanish. In the last case, non-symmetric points are created and destroyed at
pitchfork bifurcations and, as a result of global bifurcations, the 1:4
resonant chain of islands rotates by $\pi/4$. For both maps several
bifurcations are detected and illustrated.
| [
{
"version": "v1",
"created": "Sun, 26 Nov 2017 20:03:31 GMT"
}
] | 2018-05-23T00:00:00 | [
[
"Gonchenko",
"M.",
""
],
[
"Gonchenko",
"S. V.",
""
],
[
"Ovsyannikov",
"I.",
""
],
[
"Vieiro",
"A.",
""
]
] | |
2105.01413 | Lars Jaffke | Lars Jaffke, O-joung Kwon, Jan Arne Telle | Classes of intersection digraphs with good algorithmic properties | null | null | null | null | math.CO cs.DS | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An intersection digraph is a digraph where every vertex $v$ is represented by
an ordered pair $(S_v, T_v)$ of sets such that there is an edge from $v$ to $w$
if and only if $S_v$ and $T_w$ intersect. An intersection digraph is reflexive
if $S_v\cap T_v\neq \emptyset$ for every vertex $v$. Compared to well-known
undirected intersection graphs like interval graphs and permutation graphs, not
many algorithmic applications on intersection digraphs have been developed.
Motivated by the successful story on algorithmic applications of intersection
graphs using a graph width parameter called mim-width, we introduce its
directed analogue called `bi-mim-width' and prove that various classes of
reflexive intersection digraphs have bounded bi-mim-width. In particular, we
show that as a natural extension of $H$-graphs, reflexive $H$-digraphs have
linear bi-mim-width at most $12|E(H)|$, which extends a bound on the linear
mim-width of $H$-graphs [On the Tractability of Optimization Problems on
$H$-Graphs. Algorithmica 2020]. For applications, we introduce a novel
framework of directed versions of locally checkable problems, that streamlines
the definitions and the study of many problems in the literature and
facilitates their common algorithmic treatment. We obtain unified
polynomial-time algorithms for these problems on digraphs of bounded
bi-mim-width, when a branch decomposition is given. Locally checkable problems
include Kernel, Dominating Set, and Directed $H$-Homomorphism.
| [
{
"version": "v1",
"created": "Tue, 4 May 2021 10:59:39 GMT"
}
] | 2021-05-05T00:00:00 | [
[
"Jaffke",
"Lars",
""
],
[
"Kwon",
"O-joung",
""
],
[
"Telle",
"Jan Arne",
""
]
] | |
2204.11969 | Alex Hamill | Tao Qu, Alex Hamill, R. H. Victora, P. A. Crowell | Oscillations and confluence in three-magnon scattering of ferromagnetic
resonance | null | null | 10.1103/PhysRevB.107.L060401 | null | cond-mat.mes-hall | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have performed a time-resolved and phase-sensitive investigation of
three-magnon scattering of ferromagnetic resonance (FMR) over several orders of
magnitude in excitation power. We observe a regime that hosts transient
oscillations of the FMR magnon population, despite higher-order magnon
interactions at large powers. Also at high powers, the scattering generates
$180^\circ$ phase shifts of the FMR magnons. These phase shifts correspond to
reversals in the three-magnon scattering direction, between splitting and
confluence. These scattering reversals are most directly observed after
removing the microwave excitation, generating coherent oscillations of the FMR
magnon population much larger than its steady-state value during the
excitation. Our model is in strong agreement with these findings. These
findings reveal the transient behavior of this three-magnon scattering process,
and the nontrivial interplay between three-magnon scattering and the magnons'
phases.
| [
{
"version": "v1",
"created": "Mon, 25 Apr 2022 21:19:16 GMT"
},
{
"version": "v2",
"created": "Thu, 28 Apr 2022 16:31:39 GMT"
},
{
"version": "v3",
"created": "Tue, 9 Aug 2022 17:58:03 GMT"
},
{
"version": "v4",
"created": "Sat, 31 Dec 2022 16:07:44 GMT"
}
] | 2023-02-15T00:00:00 | [
[
"Qu",
"Tao",
""
],
[
"Hamill",
"Alex",
""
],
[
"Victora",
"R. H.",
""
],
[
"Crowell",
"P. A.",
""
]
] | |
2411.11404 | Roberto Tauraso | James A. Sellers, Roberto Tauraso | Arithmetic properties of MacMahon-type sums of divisors | null | null | null | null | math.NT math.CO | http://creativecommons.org/licenses/by/4.0/ | In this paper, we prove several new infinite families of Ramanujan--like
congruences satisfied by the coefficients of the generating function $U_t(a,q)$
which is an extension of MacMahon's generalized sum-of-divisors function. As a
by-product, we also show that, for all $n\geq 0$, $\overline{B}_3(15n+7)\equiv
0 \pmod{5}$ where $\overline{B}_3(n)$ is the number of almost $3$-regular
overpartitions of $n$.
| [
{
"version": "v1",
"created": "Mon, 18 Nov 2024 09:27:32 GMT"
}
] | 2024-11-19T00:00:00 | [
[
"Sellers",
"James A.",
""
],
[
"Tauraso",
"Roberto",
""
]
] | |
1908.04478 | EPTCS | Thomas Seiller (CNRS, France), Steffen Jost (LMU Munich, Germany) | Proceedings Third Joint Workshop on Developments in Implicit
Computational complExity and Foundational & Practical Aspects of Resource
Analysis | null | EPTCS 298, 2019 | 10.4204/EPTCS.298 | null | cs.CC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | These proceedings present the accepted regular papers and some selected
extended abstracts from the 3rd joint DICE-FOPARA workshop, which was held in
Prague, Czech Republic on April 6-7, 2019, as a part of ETAPS. The joint
workshop provides synergies by combining two complementary communities:
The 10th DICE workshop explores the area of Implicit Computational Complexity
(ICC), which grew out from several proposals to use logic and formal methods to
provide languages for complexity-bounded computation (e.g. Ptime, Logspace
computation). It aims at studying the computational complexity of programs
without referring to external measuring conditions or a particular machine
model, but only by considering language restrictions or logical/computational
principles entailing complexity properties. Several approaches have been
explored for that purpose, such as restrictions on primitive recursion and
ramification, rewriting systems, linear logic, types and lambda calculus,
interpretations of functional and imperative programs.
The 6th FOPARA workshop serves as a forum for presenting original research
results that are relevant to the analysis of resource (e.g. time, space,
energy) consumption by computer programs. The workshop aims to bring together
the researchers that work on foundational issues with the researchers that
focus more on practical results. Therefore, both theoretical and practical
contributions are encouraged. We also encourage papers that combine theory and
practice.
This third joint DICE-FOPARA workshop at ETAPS 2019 follows the successful
experiences of co-location of DICE-FOPARA at ETAPS 2015 in London and ETAPS
2017 in Uppsala.
| [
{
"version": "v1",
"created": "Tue, 13 Aug 2019 04:09:00 GMT"
}
] | 2019-08-14T00:00:00 | [
[
"Seiller",
"Thomas",
"",
"CNRS, France"
],
[
"Jost",
"Steffen",
"",
"LMU Munich, Germany"
]
] | |
2308.06862 | Erfan Loghmani | Erfan Loghmani, MohammadAmin Fazli | Effect of Choosing Loss Function when Using T-batching for
Representation Learning on Dynamic Networks | 29 pages, 10 figures, 4 tables, Submitted to Information Sciences | null | null | null | cs.LG cs.SI | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Representation learning methods have revolutionized machine learning on
networks by converting discrete network structures into continuous domains.
However, dynamic networks that evolve over time pose new challenges. To address
this, dynamic representation learning methods have gained attention, offering
benefits like reduced learning time and improved accuracy by utilizing temporal
information.
T-batching is a valuable technique for training dynamic network models that
reduces training time while preserving vital conditions for accurate modeling.
However, we have identified a limitation in the training loss function used
with t-batching. Through mathematical analysis, we propose two alternative loss
functions that overcome these issues, resulting in enhanced training
performance.
We extensively evaluate the proposed loss functions on synthetic and
real-world dynamic networks. The results consistently demonstrate superior
performance compared to the original loss function. Notably, in a real-world
network characterized by diverse user interaction histories, the proposed loss
functions achieved more than 26.9% enhancement in Mean Reciprocal Rank (MRR)
and more than 11.8% improvement in Recall@10. These findings underscore the
efficacy of the proposed loss functions in dynamic network modeling.
| [
{
"version": "v1",
"created": "Sun, 13 Aug 2023 23:34:36 GMT"
}
] | 2023-08-15T00:00:00 | [
[
"Loghmani",
"Erfan",
""
],
[
"Fazli",
"MohammadAmin",
""
]
] | |
1909.00856 | Misha Neklyudov Dr | Wolfgang Bock, Vyacheslav Futorny, Mikhail Neklyudov | Convex topological algebras via linear vector fields and Cuntz algebras | 19 pages | null | null | null | math.FA math.RA math.RT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Realization by linear vector fields is constructed for any Lie algebra which
admits a biorthogonal system and for its any suitable representation. The
embedding into Lie algebras of linear vector fields is analogous to the
classical Jordan-Schwinger map. A number of examples of such Lie algebras of
linear vector fields is computed. In particular, we obtain examples of the
twisted Heisenberg-Virasoro Lie algebra and the Schr\"odinger-Virasoro Lie
algebras among others. More generally, we construct an embedding of an
arbitrary locally convex topological algebra into the Cuntz algebra.
| [
{
"version": "v1",
"created": "Mon, 2 Sep 2019 20:37:07 GMT"
}
] | 2019-09-04T00:00:00 | [
[
"Bock",
"Wolfgang",
""
],
[
"Futorny",
"Vyacheslav",
""
],
[
"Neklyudov",
"Mikhail",
""
]
] | |
hep-ph/9606222 | Aneesh Manohar | Aneesh V. Manohar | Effective Field Theories | 52 pages, 20 figures. Uses temuphys.cmm (available from xxx.lanl.gov)
One lecture of introductory material added to hep-ph/9508245 (1996 Schladming
Winter School Lectures) | null | 10.1007/BFb0104294 | UCSD/PTH 96-04 | hep-ph | null | These lectures introduce some of the basic ideas of effective field theories.
The topics discussed include: relevant and irrelevant operators and scaling,
renormalization in effective field theories, decoupling of heavy particles,
power counting, and naive dimensional analysis. Effective Lagrangians are used
to study the $\Delta S=2$ weak interactions and chiral perturbation theory.
| [
{
"version": "v1",
"created": "Tue, 4 Jun 1996 12:52:48 GMT"
}
] | 2009-10-28T00:00:00 | [
[
"Manohar",
"Aneesh V.",
""
]
] | |
2408.15348 | Matthias Frey | Matthias Frey, Steven B\"oing, Rui F. G. Ap\'ostolo | A parallel particle cluster algorithm using nearest neighbour graphs and
passive target communication | 19 pages, 14 figures, 7 tables | null | null | null | cs.DC | http://creativecommons.org/licenses/by/4.0/ | We present a parallel cluster algorithm for $N$-body simulations which uses a
nearest neighbour search algorithm and one-sided messaging passing interface
(MPI) communication. The nearest neighbour is defined by the Euclidean distance
in three-dimensional space. The resulting directed nearest neighbour graphs
that are used to define the clusters are split up in an iterative procedure
with MPI remote memory access (RMA) communication. The method has been
implemented as part of the elliptical parcel-in-cell (EPIC) method targeting
geophysical fluid flows. The parallel scalability of the algorithm is discussed
by means of an artificial and a standard fluid dynamics test case. The cluster
algorithm shows good weak and strong scalability up to 16,384 cores with a
parallel weak scaling efficiency of about 80% for balanced workloads. In poorly
balanced problems, MPI synchronisation dominates execution of the cluster
algorithm and thus drastically worsens its parallel scalability.
| [
{
"version": "v1",
"created": "Tue, 27 Aug 2024 18:20:43 GMT"
}
] | 2024-08-29T00:00:00 | [
[
"Frey",
"Matthias",
""
],
[
"Böing",
"Steven",
""
],
[
"Apóstolo",
"Rui F. G.",
""
]
] | |
2409.04922 | Prakash Chourasia | Sarwan Ali, Prakash Chourasia, Bipin Koirala, Murray Patterson | Nearest Neighbor CCP-Based Molecular Sequence Analysis | null | null | null | null | q-bio.GN cs.AI cs.CC cs.LG | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Molecular sequence analysis is crucial for comprehending several biological
processes, including protein-protein interactions, functional annotation, and
disease classification. The large number of sequences and the inherently
complicated nature of protein structures make it challenging to analyze such
data. Finding patterns and enhancing subsequent research requires the use of
dimensionality reduction and feature selection approaches. Recently, a method
called Correlated Clustering and Projection (CCP) has been proposed as an
effective method for biological sequencing data. The CCP technique is still
costly to compute even though it is effective for sequence visualization.
Furthermore, its utility for classifying molecular sequences is still
uncertain. To solve these two problems, we present a Nearest Neighbor
Correlated Clustering and Projection (CCP-NN)-based technique for efficiently
preprocessing molecular sequence data. To group related molecular sequences and
produce representative supersequences, CCP makes use of sequence-to-sequence
correlations. As opposed to conventional methods, CCP doesn't rely on matrix
diagonalization, therefore it can be applied to a range of machine-learning
problems. We estimate the density map and compute the correlation using a
nearest-neighbor search technique. We performed molecular sequence
classification using CCP and CCP-NN representations to assess the efficacy of
our proposed approach. Our findings show that CCP-NN considerably improves
classification task accuracy as well as significantly outperforms CCP in terms
of computational runtime.
| [
{
"version": "v1",
"created": "Sat, 7 Sep 2024 22:06:00 GMT"
}
] | 2024-09-10T00:00:00 | [
[
"Ali",
"Sarwan",
""
],
[
"Chourasia",
"Prakash",
""
],
[
"Koirala",
"Bipin",
""
],
[
"Patterson",
"Murray",
""
]
] | |
0907.0885 | Gabriela Litcanu | Gabriela Litcanu, Cristian Morales-Rodrigo | Asymptotic behaviour of global solutions to a model of cell invasion | 29 pages | null | null | null | math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we analyze a mathematical model focusing on key events of the
cells invasion process. Global well-possedness and asymptotic behaviour of
nonnegative solutions to the corresponding coupled system of three nonlinear
partial differential equations are studied.
| [
{
"version": "v1",
"created": "Sun, 5 Jul 2009 19:51:13 GMT"
}
] | 2009-07-07T00:00:00 | [
[
"Litcanu",
"Gabriela",
""
],
[
"Morales-Rodrigo",
"Cristian",
""
]
] | |
2409.04314 | Thomas Dubbe | Thomas Dubbe | The automaticity of the set of primes | null | null | null | null | math.NT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The automaticity $A(x)$ of a set $\mathcal{X}$ is the size of the smallest
automaton that recognizes $\mathcal{X}$ on all words of length $\leq x$. We
show that the automaticity of the set of primes is at least
$x\exp\left(-c(\log\log x)^2\log\log\log x\right)$, which is fairly close to
the maximal automaticity.
| [
{
"version": "v1",
"created": "Fri, 6 Sep 2024 14:40:03 GMT"
}
] | 2024-09-09T00:00:00 | [
[
"Dubbe",
"Thomas",
""
]
] | |
quant-ph/0410134 | Marek Kwas | Marek Kwas | Complexity of multivariate Feynman-Kac path integration in randomized
and quantum settings | 20 pages | null | null | null | quant-ph | null | The Feynman-Kac path integration problem was studied in the worst case
setting by Plaskota et al. (J. Comp. Phys. 164 (2000) 335) for the univariate
case and by Kwas and Li (J. Comp. 19 (2003) 730) for the multivariate case with
d space variables. In this paper we consider the multivariate Feynman-Kac path
integration problem in the randomized and quantum settings. For smooth
multivariate functions, it was proven in Kwas and Li (2003) that the classical
worst case complexity suffers from the curse of dimensionality in d. We show
that in both the randomized and quantum settings the curse of dimensionality is
vanquished, i.e., the number of function evaluations and/or quantum queries
required to compute an e-approximation has a bound independent of d and
depending polynomially on 1/e. The exponents of these polynomials are at most 2
in the randomized setting and at most 1 in the quantum setting. Hence we have
exponential speedup over the classical worst case setting and quadratic speedup
of the quantum setting over the randomized setting. However, both the
randomized and quantum algorithms presented here still require extensive
precomputing, similar to the algorithms of Plaskota et al. (2000) and Kwas and
Li(2003).
| [
{
"version": "v1",
"created": "Mon, 18 Oct 2004 11:47:35 GMT"
}
] | 2007-05-23T00:00:00 | [
[
"Kwas",
"Marek",
""
]
] | |
2110.14975 | Thomas Bosman | T. O. S. J. Bosman (1 and 2), M. van Berkel (1), M. R. de Baar (1 and
2) ((1) DIFFER, (2) Eindhoven University of Technology) | Model-based electron density profile estimation and control, applied to
ITER | null | null | null | null | physics.plasm-ph cs.SY eess.SY | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In contemporary magnetic confinement devices, the density distribution is
sensed with interferometers and actuated with feedback controlled gas injection
and open-loop pellet injection. This is at variance with the density control
for ITER and DEMO, that will depend mainly on pellet injection as an actuator
in feed-back control. This paper presents recent developments in state
estimation and control of the electron density profile for ITER using relevant
sensors and actuators. As a first step, Thomson scattering is included in an
existing dynamic state observer. Second, model predictive control is developed
as a strategy to regulate the density profile while avoiding limits associated
with the total density (Greenwald limit) or gradients in the density
distribution (e.g. neo-classical impurity transport). Simulations show that
high quality density profile estimation can be achieved with Thomson Scattering
and that the controller is capable of regulating the distribution as desired.
| [
{
"version": "v1",
"created": "Thu, 28 Oct 2021 09:26:38 GMT"
}
] | 2021-10-29T00:00:00 | [
[
"Bosman",
"T. O. S. J.",
"",
"1 and 2"
],
[
"van Berkel",
"M.",
"",
"DIFFER"
],
[
"de Baar",
"M. R.",
"",
"1 and\n 2"
]
] | |
1611.03944 | Svetlana Varchenko | Andrew Prudhom and Alexander Varchenko | Potentials of a family of arrangements of hyperplanes and elementary
subarrangements | Latex , 26 pages, a misprint is corrected. arXiv admin note: text
overlap with arXiv:1410.2438 | null | null | null | math.AG math.DG nlin.SI | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the Frobenius algebra of functions on the critical set of the
master function of a weighted arrangement of hyperplanes in $\C^k$ with normal
crossings. We construct two potential functions (of first and second kind) of
variables labeled by hyperplanes of the arrangement and prove that the matrix
coefficients of the Grothendieck residue bilinear form on the algebra are given
by the $2k$-th derivatives of the potential function of first kind and the
matrix coefficients of the multiplication operators on the algebra are given by
the $(2k+1)$-st derivatives of the potential function of second kind. Thus the
two potentials completely determine the Frobenius algebra. The presence of
these potentials is a manifestation of a Frobenius like structure similar to
the Frobenius manifold structure.
We introduce the notion of an elementary subarrangement of an arrangement
with normal crossings. It turns out that our potential functions are local in
the sense that the potential functions are sums of contributions from
elementary subarrangements of the given arrangement. This is a new phenomenon
of locality of the Grothendieck residue bilinear form and multiplication on the
algebra.
It is known that this Frobenius algebra of functions on the critical set is
isomorphic to the Bethe algebra of this arrangement. (That Bethe algebra is an
analog of the Bethe algebras in the theory of quantum integrable models.) Thus
our potential functions describe that Bethe algebra too.
| [
{
"version": "v1",
"created": "Sat, 12 Nov 2016 03:06:49 GMT"
},
{
"version": "v2",
"created": "Fri, 16 Dec 2016 15:33:54 GMT"
}
] | 2016-12-19T00:00:00 | [
[
"Prudhom",
"Andrew",
""
],
[
"Varchenko",
"Alexander",
""
]
] | |
2111.00727 | Zheng Li | Xuebo Zhou, Hongxiong Liu, Wei Wu, Kun Jiang, Youguo Shi, Zheng Li, Yu
Sui, Jiangping Hu and Jianlin Luo | Anomalous thermal Hall effect and anomalous Nernst effect of
CsV$_{3}$Sb$_{5}$ | null | Phys. Rev. B 105, 205104 (2022) | 10.1103/PhysRevB.105.205104 | null | cond-mat.str-el cond-mat.supr-con | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motived by time-reversal symmetry breaking and giant anomalous Hall effect in
kagome superconductor \textit{A}V$_3$Sb$_5$ (\textit{A} = Cs, K, Rb), we
carried out the thermal transport measurements on CsV$_3$Sb$_5$. In addition to
the anomalous Hall effect, the anomalous Nernst effect and the anomalous
thermal Hall effect emerge. Interestingly, the longitudinal thermal
conductivity $\kappa_{xx}$ largely deviates from the electronic contribution
obtained from the longitudinal conductivity $\sigma_{xx}$ by the
Wiedemann-Franz law. In contrast, the thermal Hall conductivity $\kappa_{xy}$
is roughly consistent with the Wiedemann-Franz law from electronic
contribution. All these results indicate the large phonon contribution in the
longitudinal thermal conductivity. Moreover, the thermal Hall conductivity is
also slightly greater than the theoretical electronic contribution, indicating
other charge neutral contributions. More than that, the Nernst coefficient and
Hall resistivity show the multi-band behavior with possible additional
contribution from Berry curvature at the low fields.
| [
{
"version": "v1",
"created": "Mon, 1 Nov 2021 06:59:42 GMT"
},
{
"version": "v2",
"created": "Thu, 5 May 2022 17:38:44 GMT"
}
] | 2022-05-06T00:00:00 | [
[
"Zhou",
"Xuebo",
""
],
[
"Liu",
"Hongxiong",
""
],
[
"Wu",
"Wei",
""
],
[
"Jiang",
"Kun",
""
],
[
"Shi",
"Youguo",
""
],
[
"Li",
"Zheng",
""
],
[
"Sui",
"Yu",
""
],
[
"Hu",
"Jiangping",
""
],
[
"Luo",
"Jianlin",
""
]
] | |
1004.4412 | Pramod N. Achar | Pramod N. Achar | Green functions via hyperbolic localization | 14 pages | null | null | null | math.RT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Let G be a reductive algebraic group, with nilpotent cone N and flag variety
G/B. We construct an exact functor from perverse sheaves on N to locally
constant sheaves on G/B, and we use it to study Ext-groups of simple perverse
sheaves on N in terms of the cohomology of G/B. As an application, we give new
proofs of some known results on stalks of perverse sheaves on N.
| [
{
"version": "v1",
"created": "Mon, 26 Apr 2010 05:36:29 GMT"
}
] | 2010-04-27T00:00:00 | [
[
"Achar",
"Pramod N.",
""
]
] | |
2201.10449 | F\'elix Martel | Alexandre Moly, Thomas Costecalde, Felix Martel, Christelle Larzabal,
Serpil Karakas, Alexandre Verney, Guillaume Charvet, Stephan Chabardes, Alim
Louis Benabid, Tetiana Aksenova | An adaptive closed-loop ECoG decoder for long-term and stable bimanual
control of an exoskeleton by a tetraplegic | null | null | null | null | eess.SP cs.LG cs.RO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Brain-computer interfaces (BCIs) still face many challenges to step out of
laboratories to be used in real-life applications. A key one persists in the
high performance control of diverse effectors for complex tasks, using chronic
and safe recorders. This control must be robust over time and of high decoding
performance without continuous recalibration of the decoders. In the article,
asynchronous control of an exoskeleton by a tetraplegic patient using a
chronically implanted epidural electrocorticography (EpiCoG) implant is
demonstrated. For this purpose, an adaptive online tensor-based decoder: the
Recursive Exponentially Weighted Markov-Switching multi-Linear Model (REW-MSLM)
was developed. We demonstrated over a period of 6 months the stability of the
8-dimensional alternative bimanual control of the exoskeleton and its virtual
avatar using REW-MSLM without recalibration of the decoder.
| [
{
"version": "v1",
"created": "Tue, 25 Jan 2022 16:51:29 GMT"
}
] | 2022-01-26T00:00:00 | [
[
"Moly",
"Alexandre",
""
],
[
"Costecalde",
"Thomas",
""
],
[
"Martel",
"Felix",
""
],
[
"Larzabal",
"Christelle",
""
],
[
"Karakas",
"Serpil",
""
],
[
"Verney",
"Alexandre",
""
],
[
"Charvet",
"Guillaume",
""
],
[
"Chabardes",
"Stephan",
""
],
[
"Benabid",
"Alim Louis",
""
],
[
"Aksenova",
"Tetiana",
""
]
] | |
cond-mat/0001389 | Robert Shrock | Robert Shrock (Yang ITP, SUNY Stony Brook and BNL) | Exact Potts Model Partition Functions on Ladder Graphs | 73 pages, Latex, 20 postscript figures, Physica A, in press | Physica A283 (2000) 388-446 | 10.1016/S0378-4371(00)00109-6 | YITP-SB-99-31, BNL-HET-99/35 | cond-mat.stat-mech hep-lat math-ph math.MP | null | We present exact calculations of the partition function $Z$ of the $q$-state
Potts model and its generalization to real $q$, the random cluster model, for
arbitrary temperature on $n$-vertex ladder graphs with free, cyclic, and
M\"obius longitudinal boundary conditions. These partition functions are
equivalent to Tutte/Whitney polynomials for these graphs. The free energy is
calculated exactly for the infinite-length limit of these ladder graphs and the
thermodynamics is discussed.
| [
{
"version": "v1",
"created": "Wed, 26 Jan 2000 17:33:09 GMT"
}
] | 2009-10-31T00:00:00 | [
[
"Shrock",
"Robert",
"",
"Yang ITP, SUNY Stony Brook and BNL"
]
] | |
2407.04248 | Zhikun Zhang | Zhikun Zhang, Yiting Duan, Xiangjun Wang and Mingyuan Zhang | Machine Learning for Complex Systems with Abnormal Pattern by Exception
Maximization Outlier Detection Method | null | null | null | null | stat.ML cs.LG | http://creativecommons.org/licenses/by/4.0/ | This paper proposes a novel fast online methodology for outlier detection
called the exception maximization outlier detection method(EMODM), which
employs probabilistic models and statistical algorithms to detect abnormal
patterns from the outputs of complex systems. The EMODM is based on a two-state
Gaussian mixture model and demonstrates strong performance in probability
anomaly detection working on real-time raw data rather than using special prior
distribution information. We confirm this using the synthetic data from two
numerical cases. For the real-world data, we have detected the short circuit
pattern of the circuit system using EMODM by the current and voltage output of
a three-phase inverter. The EMODM also found an abnormal period due to COVID-19
in the insured unemployment data of 53 regions in the United States from 2000
to 2024. The application of EMODM to these two real-life datasets demonstrated
the effectiveness and accuracy of our algorithm.
| [
{
"version": "v1",
"created": "Fri, 5 Jul 2024 04:30:41 GMT"
}
] | 2024-07-08T00:00:00 | [
[
"Zhang",
"Zhikun",
""
],
[
"Duan",
"Yiting",
""
],
[
"Wang",
"Xiangjun",
""
],
[
"Zhang",
"Mingyuan",
""
]
] | |
astro-ph/0301451 | Fabrice Martins | F. Martins (1, 2), D. Schaerer (1, 2), M. Heydari-Malayeri (3), ((1)
LAT-OMP, Toulouse, (2) Geneva Observatory, Sauverny, (3) Observatoire de
Paris, Paris) | Spectroscopic analysis of newborn massive stars in SMC N81 | A massive star odyssey : from main sequence to supernovae, Proc. IAU
Symp. 212, K.A. van der Hucht, A. Herrero, C. Esteban eds, ASP conf. series,
in press | null | null | null | astro-ph | null | We present the first results of a spectroscopic study of young massive stars
in the SMC High Excitation Blob N81. These stars have Mv values which are ~ 2
mag smaller than those of nor mal dwarf stars. Their UV STIS spectra reveal
features typical of O stars, but surprisingly weak wind components. The
preliminary modelling of these spectr a with the code CMFGEN (Hillier & Miller
1998) indicates a mass loss rate of the order 10e-9 Mdot/yr. If confirmed, such
a weak wind may indicate either a breakdown of the wind-momentum luminosity
relation at low luminosity, or a steeper slope of this relation at low
metallicity.
| [
{
"version": "v1",
"created": "Wed, 22 Jan 2003 18:36:10 GMT"
}
] | 2007-05-23T00:00:00 | [
[
"Martins",
"F.",
""
],
[
"Schaerer",
"D.",
""
],
[
"Heydari-Malayeri",
"M.",
""
]
] | |
1510.04478 | Sunil Mukhi | Harsha R. Hampapura and Sunil Mukhi | On 2d Conformal Field Theories with Two Characters | 29 pages, expanded with discussion on chiral algebras, final version
to appear in JHEP | null | 10.1007/JHEP01(2016)005 | null | hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Rational CFT's are classified by an integer $\ell$, the number of zeroes of
the Wronskian of their characters in moduli space. For $\ell=0$ they satisfy
non-singular modular-invariant differential equations, while for $\ell>0$ the
corresponding equations have singularities. We survey CFT's with two characters
and $\ell=0,2,3,4$ and verify the consistency, at the level of characters, of
some candidate theories with $\ell\ne 0$. For $\ell=2$ there are seven
consistents sets of characters. We identify specific combinations of level-1
current algebras that are potential symmetries of the corresponding CFT's.
| [
{
"version": "v1",
"created": "Thu, 15 Oct 2015 11:48:09 GMT"
},
{
"version": "v2",
"created": "Tue, 20 Oct 2015 05:34:04 GMT"
},
{
"version": "v3",
"created": "Sat, 31 Oct 2015 13:14:31 GMT"
},
{
"version": "v4",
"created": "Sat, 19 Dec 2015 18:53:23 GMT"
}
] | 2016-01-27T00:00:00 | [
[
"Hampapura",
"Harsha R.",
""
],
[
"Mukhi",
"Sunil",
""
]
] | |
2308.12132 | Subhendu Kahaly | Mousumi Upadhyay Kahaly, Saibabu Madas, Boris Mesits and Subhendu
Kahaly | Tunable ultrafast thermionic emission from femtosecond-laser hot spot on
a metal surface: role of laser polarization and angle of incidence | 17 pages, 7 figures, 1 table | Applied Surface Science, (2023) | 10.1016/j.apsusc.2023.158668 | null | physics.optics cond-mat.mes-hall cond-mat.mtrl-sci physics.app-ph physics.plasm-ph | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Ultrafast laser induced thermionic emission from metal surfaces has several
applications. Here, we investigate the role of laser polarization and angle of
incidence on the ultrafast thermionic emission process from laser driven gold
coated glass surface. The spatio-temporal evolution of electron and lattice
temperatures are obtained using an improved three-dimensional (3D)
two-temperature model (TTM) which takes into account the 3D laser pulse profile
focused obliquely onto the surface. The associated thermionic emission features
are described through modified Richardson-Dushman equation, including dynamic
space charge effects and are included self-consistently in our numerical
approach. We show that temperature dependent reflectivity influences laser
energy absorption. The resulting peak electron temperature on the metal surface
monotonically increases with angle of incidence for P polarization, while for S
polarization it shows opposite trend. We observe that thermionic emission
duration shows strong dependence on angle of incidence and contrasting
polarization dependent behaviour. The duration of thermionic current shows
strong correlation to the intrinsic electron-lattice thermalization time, in a
fluence regime well below the damage threshold of gold. The observations and
insights have important consequences in designing ultrafast thermionic emitters
based on a metal based architecture.
| [
{
"version": "v1",
"created": "Wed, 23 Aug 2023 13:41:44 GMT"
}
] | 2023-10-19T00:00:00 | [
[
"Kahaly",
"Mousumi Upadhyay",
""
],
[
"Madas",
"Saibabu",
""
],
[
"Mesits",
"Boris",
""
],
[
"Kahaly",
"Subhendu",
""
]
] | |
1605.05858 | Moez AbdelGawad | Robert Cartwright, Rebecca Parsons, Moez AbdelGawad | Domain Theory: An Introduction | 90 pages | null | null | null | cs.PL cs.LO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This monograph is an ongoing revision of "Lectures On A Mathematical Theory
of Computation" by Dana Scott. Scott's monograph uses a formulation of domains
called neighborhood systems in which finite elements are selected subsets of a
master set of objects called "tokens". Since tokens have little intuitive
significance, Scott has discarded neighborhood systems in favor of an
equivalent formulation of domains called information systems. Unfortunately, he
has not rewritten his monograph to reflect this change.
We have rewritten Scott's monograph in terms of finitary bases instead of
information systems. A finitary basis is an information system that is closed
under least upper bounds on finite consistent subsets. This convention ensures
that every finite answer is represented by a single basis object instead of a
set of objects.
| [
{
"version": "v1",
"created": "Thu, 19 May 2016 09:06:01 GMT"
},
{
"version": "v2",
"created": "Mon, 23 May 2016 12:21:17 GMT"
},
{
"version": "v3",
"created": "Thu, 26 May 2016 14:28:34 GMT"
},
{
"version": "v4",
"created": "Tue, 14 Jun 2016 06:36:36 GMT"
}
] | 2016-06-15T00:00:00 | [
[
"Cartwright",
"Robert",
""
],
[
"Parsons",
"Rebecca",
""
],
[
"AbdelGawad",
"Moez",
""
]
] | |
2402.11412 | Kok Yew Ng Dr | S. Wucherer, R. McMurray, K. Y. Ng, F. Kerber | Predicting Maximum Permitted Process Forces for Object Grasping and
Manipulation Using a Deep Learning Regression Model | 6 pages, 4 figures, 3 tables, to be submitted as a conference paper
to IEEE CCTA2024 | null | 10.1109/CCTA60707.2024.10666569 | null | cs.RO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | During the execution of handling processes in manufacturing, it is difficult
to measure the process forces with state-of-the-art gripper systems since they
usually lack integrated sensors. Thus, the exact state of the gripped object
and the actuating process forces during manipulation and handling are unknown.
This paper proposes a deep learning regression model to construct a continuous
stability metric to predict the maximum process forces on the gripped objects
using high-resolution optical tactile sensors. A pull experiment was developed
to obtain a valid dataset for training. Continuously force-based labeled pairs
of tactile images for varying grip positions of industrial gearbox parts were
acquired to train a novel neural network inspired by encoder-decoder
architectures. A ResNet-18 model was used for comparison. Both models can
predict the maximum process force for each object with a precision of less than
1 N. During validation, the generalization potential of the proposed
methodology with respect to previously unknown objects was demonstrated with an
accuracy of 0.4-2.1 N and precision of 1.7-3.4 N, respectively.
| [
{
"version": "v1",
"created": "Sun, 18 Feb 2024 00:59:08 GMT"
}
] | 2024-10-01T00:00:00 | [
[
"Wucherer",
"S.",
""
],
[
"McMurray",
"R.",
""
],
[
"Ng",
"K. Y.",
""
],
[
"Kerber",
"F.",
""
]
] | |
2008.08511 | Felix Montag | Felix Montag, Alina Sagimuldina and Monika Schnitzer | Are temporary value-added tax reductions passed on to consumers?
Evidence from Germany's stimulus | null | null | null | null | econ.GN q-fin.EC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper provides the first estimates of the pass-through rate of the
ongoing temporary value-added tax (VAT) reduction, which is part of the German
fiscal response to COVID-19. Using a unique dataset containing the universe of
price changes at fuel stations in Germany and France in June and July 2020, we
employ a difference-in-differences strategy and find that pass-through is fast
and substantial but remains incomplete for all fuel types. Furthermore, we find
a high degree of heterogeneity between the pass-through estimates for different
fuel types. Our results are consistent with the interpretation that
pass-through rates are higher for customer groups who are more likely to exert
competitive pressure by shopping for lower prices. Our results have important
implications for the effectiveness of the stimulus measure and the
cost-effective design of unconventional fiscal policy.
| [
{
"version": "v1",
"created": "Wed, 19 Aug 2020 15:42:15 GMT"
}
] | 2020-08-20T00:00:00 | [
[
"Montag",
"Felix",
""
],
[
"Sagimuldina",
"Alina",
""
],
[
"Schnitzer",
"Monika",
""
]
] | |
1712.03440 | Noah Giansiracusa | Colin Crowley, Noah Giansiracusa, Joshua Mundinger | A module-theoretic approach to matroids | 22 pages; v3 minor corrections/clarifications; to appear in JPAA | Journal of Pure and Applied Algebra 224.2 (2020) 894-916 | 10.1016/j.jpaa.2019.06.016 | null | math.AG math.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Speyer recognized that matroids encode the same data as a special class of
tropical linear spaces and Shaw interpreted tropically certain basic matroid
constructions; additionally, Frenk developed the perspective of tropical linear
spaces as modules over an idempotent semifield. All together, this provides
bridges between the combinatorics of matroids, the algebra of idempotent
modules, and the geometry of tropical linear spaces. The goal of this paper is
to strengthen and expand these bridges by systematically developing the
idempotent module theory of matroids. Applications include a geometric
interpretation of strong matroid maps and the factorization theorem; a
generalized notion of strong matroid maps, via an embedding of the category of
matroids into a category of module homomorphisms; a monotonicity property for
the stable sum and stable intersection of tropical linear spaces; a novel
perspective of fundamental transversal matroids; and a tropical analogue of
reduced row echelon form.
| [
{
"version": "v1",
"created": "Sat, 9 Dec 2017 21:02:16 GMT"
},
{
"version": "v2",
"created": "Tue, 19 Jun 2018 16:26:27 GMT"
},
{
"version": "v3",
"created": "Fri, 3 May 2019 11:28:04 GMT"
}
] | 2023-03-03T00:00:00 | [
[
"Crowley",
"Colin",
""
],
[
"Giansiracusa",
"Noah",
""
],
[
"Mundinger",
"Joshua",
""
]
] | |
2311.12667 | Karl Larsson | Martin Bj\"orklund, Karl Larsson, Mats G. Larson | Error Estimates for Finite Element Approximations of Viscoelastic
Dynamics: The Generalized Maxwell Model | null | Comput. Methods Appl. Mech. Engrg., 425 (2024), paper no 116933 | 10.1016/j.cma.2024.116933 | null | math.NA cs.NA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove error estimates for a finite element approximation of viscoelastic
dynamics based on continuous Galerkin in space and time, both in energy norm
and in $L^2$ norm. The proof is based on an error representation formula using
a discrete dual problem and a stability estimate involving the kinetic,
elastic, and viscoelastic energies. To set up the dual error analysis and to
prove the basic stability estimates, it is natural to formulate the problem as
a system involving evolution equations for the viscoelastic stress, the
displacements, and the velocities. The equations for the viscoelastic stress
can, however, be solved analytically in terms of the deviatoric strain
velocity, and therefore, the viscoelastic stress can be eliminated from the
system, resulting in a system for displacements and velocities.
| [
{
"version": "v1",
"created": "Tue, 21 Nov 2023 15:19:07 GMT"
},
{
"version": "v2",
"created": "Tue, 12 Mar 2024 14:49:41 GMT"
}
] | 2024-03-26T00:00:00 | [
[
"Björklund",
"Martin",
""
],
[
"Larsson",
"Karl",
""
],
[
"Larson",
"Mats G.",
""
]
] | |
2201.00460 | Hai-Yang Cheng | Hai-Yang Cheng, Cheng-Wei Chiang, Zhi-Qing Zhang | Hadronic three-body D decays mediated by scalar resonances | 30 pages, 2 figures, references and discussions added, version
accepted by PRD | null | 10.1103/PhysRevD.105.033006 | null | hep-ph hep-ex hep-lat | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the quasi-two-body $D\to SP$ decays and the three-body $D$ decays
proceeding through intermediate scalar resonances, where $S$ and $P$ denote
scalar and pseudoscalar mesons, respectively. Our main results are: (i) Certain
external and internal $W$-emission diagrams with the emitted meson being a
scalar meson are na{\"i}vely expected to vanish, but they actually receive
contributions from vertex and hard spectator-scattering corrections beyond the
factorization approximation. (ii) For light scalars with masses below or close
to 1~GeV, it is more sensible to study three-body decays directly and compare
with experiment as the two-body branching fractions are either unavailable or
subject to large finite-width effects of the scalar meson. (iii) We consider
the two-quark (scheme I) and four-quark (scheme II) descriptions of the light
scalar mesons, and find the latter generally in better agreement with
experiment. This is in line with recent BESIII measurements of semileptonic
charm decays that prefer the tetraquark description of light scalars produced
in charmed meson decays. (iv) The topological amplitude approach fails here as
the $D\to SP$ decay branching fractions cannot be reliably inferred from the
measurements of three-body decays, mainly because the decay rates cannot be
factorized into the topological amplitude squared and the phase space factor.
(v) The predicted rates for $D^0\to f_0 P, a_0 P$ are generally smaller than
experimental data by one order of magnitude, presumably implying the
significance of $W$-exchange amplitudes. (vi) The $W$-annihilation amplitude is
found to be very sizable in the $SP$ sector with $|A/T|_{SP}\sim 1/2$, contrary
to its suppression in the $PP$ sector with $|A/T|_{PP}\sim 0.18$.
| [
{
"version": "v1",
"created": "Mon, 3 Jan 2022 03:12:35 GMT"
},
{
"version": "v2",
"created": "Fri, 28 Jan 2022 08:09:18 GMT"
}
] | 2022-03-14T00:00:00 | [
[
"Cheng",
"Hai-Yang",
""
],
[
"Chiang",
"Cheng-Wei",
""
],
[
"Zhang",
"Zhi-Qing",
""
]
] | |
2407.01889 | Itsuki Yamanaka | Itsuki Yamanaka, Bunyo Hatsukade, Fumi Egusa, Tetsuya Hashimoto, Yuu
Niino, Tzu-Yin Hsu, Hiroyuki Kaneko and Kotaro Kohno | ALMA reveals spatially-resolved properties of molecular gas in the host
galaxy of FRB 20191001A at z = 0.2340 | 10 pages, 7 figures, 3 tables | null | null | null | astro-ph.GA | http://creativecommons.org/licenses/by/4.0/ | We report the detection of the CO(2-1) emission line with a spatial
resolution of 0.9 arcsec ($3.5 \mathrm{kpc}$) from the host galaxy of the fast
radio burst (FRB), FRB 20191001A at $z=0.2340$, using the Atacama Large
Millimeter/submillimeter Array. This is the first detection of spatially
resolved CO emission from the host galaxy of an FRB at a cosmological distance.
The inferred molecular gas mass of the host galaxy is $(2.3\pm0.4)\times10^{10}
\mathrm{M_\odot}$, indicating that it is gas-rich, as evidenced by the measured
molecular gas fraction $\mu_\mathrm{gas}=0.50\pm0.22$. This molecular-gas mass
and the star formation rate of the host, $\mathrm{SFR}=8.06\pm2.42
\mathrm{M_\odot yr^{-1}}$, differ from those observed in the other FRB host
galaxies with the average $M_\mathrm{gas}=9.6\times10^8 \mathrm{M_\odot}$ and
$\mathrm{SFR}=0.90 \mathrm{M_\odot yr^{-1}}$. This lends further credibility to
the hypothesis that FRBs may originate from single or multiple progenitors
across a diverse range of galaxy environments. Based on the observed velocity
field modeling, we find that the molecular gas disk is dominated by an ordered
circular rotation, despite the fact that the host galaxy has a gas-rich
companion galaxy with a projected separation of $\sim 25 \mathrm{kpc}$. The
formation of the FRB's progenitor might not have been triggered by this
interaction. We derive the 3$\sigma$ upper limit of the molecular gas column
density at the FRB detection site to be $< 2.1\times 10^{21} \mathrm{cm^{-2}}$
with a 3$\sigma$ upper limit.
| [
{
"version": "v1",
"created": "Tue, 2 Jul 2024 02:19:34 GMT"
}
] | 2024-07-03T00:00:00 | [
[
"Yamanaka",
"Itsuki",
""
],
[
"Hatsukade",
"Bunyo",
""
],
[
"Egusa",
"Fumi",
""
],
[
"Hashimoto",
"Tetsuya",
""
],
[
"Niino",
"Yuu",
""
],
[
"Hsu",
"Tzu-Yin",
""
],
[
"Kaneko",
"Hiroyuki",
""
],
[
"Kohno",
"Kotaro",
""
]
] | |
2205.03296 | Lixing Zhu | Lixing Zhu and Zheng Fang and Gabriele Pergola and Rob Procter and
Yulan He | Disentangled Learning of Stance and Aspect Topics for Vaccine Attitude
Detection in Social Media | null | null | null | null | cs.CL | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Building models to detect vaccine attitudes on social media is challenging
because of the composite, often intricate aspects involved, and the limited
availability of annotated data. Existing approaches have relied heavily on
supervised training that requires abundant annotations and pre-defined aspect
categories. Instead, with the aim of leveraging the large amount of unannotated
data now available on vaccination, we propose a novel semi-supervised approach
for vaccine attitude detection, called VADet. A variational autoencoding
architecture based on language models is employed to learn from unlabelled data
the topical information of the domain. Then, the model is fine-tuned with a few
manually annotated examples of user attitudes. We validate the effectiveness of
VADet on our annotated data and also on an existing vaccination corpus
annotated with opinions on vaccines. Our results show that VADet is able to
learn disentangled stance and aspect topics, and outperforms existing
aspect-based sentiment analysis models on both stance detection and tweet
clustering.
| [
{
"version": "v1",
"created": "Fri, 6 May 2022 15:24:33 GMT"
},
{
"version": "v2",
"created": "Mon, 20 Jun 2022 09:32:57 GMT"
}
] | 2022-06-22T00:00:00 | [
[
"Zhu",
"Lixing",
""
],
[
"Fang",
"Zheng",
""
],
[
"Pergola",
"Gabriele",
""
],
[
"Procter",
"Rob",
""
],
[
"He",
"Yulan",
""
]
] | |
2411.11480 | Alja\v{z} Zalar | Rajkamal Nailwal and Alja\v{z} Zalar | The truncated univariate rational moment problem | 18 pages | null | null | null | math.FA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Given a closed subset $K$ in $\mathbb{R}$, the rational $K$-truncated moment
problem ($K$-RTMP) asks to characterize the existence of a positive Borel
measure $\mu$, supported on $K$, such that a linear functional $\mathcal{L}$,
defined on all rational functions of the form $\frac{f}{q}$, where $q$ is a
fixed polynomial with all real zeros of even order and $f$ is any real
polynomial of degree at most $2k$, is an integration with respect to $\mu$. The
case of a compact set $K$ was solved by Chandler in 1994, but there is no
argument that ensures that $\mu$ vanishes on all real zeros of $q$. An obvious
necessary condition for the solvability of the $K$-RTMP is that $\mathcal{L}$
is nonnegative on every $f$ satisfying $f|_{K}\geq 0$. If $\mathcal{L}$ is
strictly positive on every $0\neq f|_{K}\geq 0$, we add the missing argument
from Chandler's solution and also bound the number of atoms in a minimal
representing measure. We show by an example that nonnegativity of $\mathcal{L}$
is not sufficient and add the missing conditions to the solution. We also solve
the $K$-RTMP for unbounded $K$ and derive the solutions to the strong truncated
Hamburger moment problem and the truncated moment problem on the unit circle as
special cases.
| [
{
"version": "v1",
"created": "Mon, 18 Nov 2024 11:32:39 GMT"
}
] | 2024-11-19T00:00:00 | [
[
"Nailwal",
"Rajkamal",
""
],
[
"Zalar",
"Aljaž",
""
]
] | |
1303.6632 | Miguel Pato | Alejandro Ibarra, Hyun Min Lee, Sergio L\'opez Gehler, Wan-Il Park,
Miguel Pato | Gamma-ray boxes from axion-mediated dark matter | 16 pages, 5 figures. Error in Section 3 corrected, figures updated,
conclusions unchanged | JCAP05(2013)016 | 10.1088/1475-7516/2013/05/016 | null | hep-ph astro-ph.HE hep-ex | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the gamma-ray output of axion-mediated dark matter and derive the
corresponding constraints set by recent data. In such scenarios the dark matter
candidate is a Dirac fermion that pair-annihilates into axions and/or scalars.
Provided that the axion decays (at least partly) into photons, these models
naturally give rise to a box-shaped gamma-ray spectrum that may present two
distinct phenomenological behaviours: a narrow box, resembling a line at half
the dark matter mass, or a wide box, spanning an extensive energy range up to
the dark matter mass. Remarkably, we find that in both cases a sizable
gamma-ray flux is predicted for a thermal relic without fine-tuning the model
parameters nor invoking boost factors. This large output is in line with recent
Fermi-LAT observations towards the Galactic centre region and is on the verge
of being excluded. We then make use of the Fermi-LAT and H.E.S.S. data to
derive robust, model-independent upper limits on the dark matter annihilation
cross section for the narrow and wide box scenarios. H.E.S.S. constraints, in
particular, turn out to match the ones from Fermi-LAT at hundreds of GeV and
extend to multi-TeV masses. Future Cherenkov telescopes will likely probe
gamma-ray boxes from thermal dark matter relics in the whole multi-TeV range, a
region hardly accessible to direct detection, collider searches and other
indirect detection strategies.
| [
{
"version": "v1",
"created": "Tue, 26 Mar 2013 20:00:01 GMT"
},
{
"version": "v2",
"created": "Wed, 15 May 2013 14:52:10 GMT"
},
{
"version": "v3",
"created": "Fri, 8 Apr 2016 09:35:47 GMT"
}
] | 2016-04-11T00:00:00 | [
[
"Ibarra",
"Alejandro",
""
],
[
"Lee",
"Hyun Min",
""
],
[
"Gehler",
"Sergio López",
""
],
[
"Park",
"Wan-Il",
""
],
[
"Pato",
"Miguel",
""
]
] | |
2207.08926 | Francesco Sala | Duiliu-Emanuel Diaconescu, Mauro Porta, Francesco Sala | Cohomological Hall algebras and their representations via torsion pairs | 68 pages | null | null | null | math.AG math.QA math.RT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we provide a way of attaching to a torsion pair $(T,F)$ on the
heart of a stable $\infty$-category $C$ a cohomological (K-theoretical,
categorified) Hall algebra and corresponding left and right representations.
More precisely, the algebra is associated to the torsion part, while the
representation is associated to the torsion-free part.
The left and right actions enable us to construct canonical subalgebras of
the endomorphism ring of the Borel-Moore homology and K-theory of the moduli
stack of torsion-free objects, whose "positive parts" recover the cohomological
Hall algebra and the K-theoretical Hall algebra associated to the torsion part
$T$, respectively. This provides a new direction that might lead to overcome
the long-standing limitation of the theory of cohomological Hall algebras to
just produce "positive parts" of whole algebras. We also provide a geometric
sufficient criterion ensuring the vanishing of the commutator between two
different operators.
In the quiver case, we obtain the action of the two-dimensional cohomological
Hall algebra of a quiver on the cohomology of Nakajima quiver varieties within
our framework. Besides the quiver case, we also apply our framework to two
torsion pairs on a smooth projective complex surface, and we investigate the
corresponding Hall algebras and their representations associated to them.
Finally, we slightly modify our method to construct representations of the
cohomological Hall algebra of zero-dimensional sheaves on $S$ on the
Borel-Moore homology of the moduli spaces of Pandharipande-Thomas stable pairs
on surfaces and on relative Hilbert schemes of points (and we obtain similar
results at the level of K-theory and bounded derived category).
| [
{
"version": "v1",
"created": "Mon, 18 Jul 2022 20:26:35 GMT"
}
] | 2022-07-20T00:00:00 | [
[
"Diaconescu",
"Duiliu-Emanuel",
""
],
[
"Porta",
"Mauro",
""
],
[
"Sala",
"Francesco",
""
]
] | |
1809.09900 | John Ilee | David Qu\'enard, John D. Ilee, Izaskun Jim\'enez-Serra, Duncan H.
Forgan, Cassandra Hall and Ken Rice | The fate of formamide in a fragmenting protoplanetary disc | 10 pages, 5 figures, accepted for publication in ApJ | null | 10.3847/1538-4357/aae4dd | null | astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent high-sensitivity observations carried out with ALMA have revealed the
presence of complex organic molecules (COMs) such as methyl cyanide (CH$_{\rm
3}$CN) and methanol (CH$_{\rm 3}$OH) in relatively evolved protoplanetary
discs. The behaviour and abundance of COMs in earlier phases of disc evolution
remains unclear. Here we combine a smoothed particle hydrodynamics simulation
of a fragmenting, gravitationally unstable disc with a gas-grain chemical code.
We use this to investigate the evolution of formamide (NH$_{\rm 2}$CHO), a
pre-biotic species, in both the disc and in the fragments that form within it.
Our results show that formamide remains frozen onto grains in the majority of
the disc where the temperatures are $<$100 K, with a predicted solid-phase
abundance that matches those observed in comets. Formamide is present in the
gas-phase in three fragments as a result of the high temperatures
($\geq$200\,K), but remains in the solid-phase in one colder ($\leq$150 K)
fragment. The timescale over which this occurs is comparable to the dust
sedimentation timescales, suggesting that any rocky core which is formed would
inherit their formamide content directly from the protosolar nebula.
| [
{
"version": "v1",
"created": "Wed, 26 Sep 2018 10:49:27 GMT"
}
] | 2018-11-28T00:00:00 | [
[
"Quénard",
"David",
""
],
[
"Ilee",
"John D.",
""
],
[
"Jiménez-Serra",
"Izaskun",
""
],
[
"Forgan",
"Duncan H.",
""
],
[
"Hall",
"Cassandra",
""
],
[
"Rice",
"Ken",
""
]
] | |
1803.00682 | Dayong Tian | Dayong Tian | Learning Decorrelated Hashing Codes for Multimodal Retrieval | null | null | null | null | cs.IR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In social networks, heterogeneous multimedia data correlate to each other,
such as videos and their corresponding tags in YouTube and image-text pairs in
Facebook. Nearest neighbor retrieval across multiple modalities on large data
sets becomes a hot yet challenging problem. Hashing is expected to be an
efficient solution, since it represents data as binary codes. As the bit-wise
XOR operations can be fast handled, the retrieval time is greatly reduced. Few
existing multimodal hashing methods consider the correlation among hashing
bits. The correlation has negative impact on hashing codes. When the hashing
code length becomes longer, the retrieval performance improvement becomes
slower. In this paper, we propose a minimum correlation regularization (MCR)
for multimodal hashing. First, the sigmoid function is used to embed the data
matrices. Then, the MCR is applied on the output of sigmoid function. As the
output of sigmoid function approximates a binary code matrix, the proposed MCR
can efficiently decorrelate the hashing codes. Experiments show the superiority
of the proposed method becomes greater as the code length increases.
| [
{
"version": "v1",
"created": "Fri, 2 Mar 2018 01:54:35 GMT"
},
{
"version": "v2",
"created": "Wed, 22 May 2019 22:39:04 GMT"
}
] | 2019-05-24T00:00:00 | [
[
"Tian",
"Dayong",
""
]
] | |
2008.10300 | Adriaan Hilbers | Adriaan P Hilbers, David J Brayshaw, Axel Gandy | Importance subsampling for power system planning under multi-year demand
and weather uncertainty | Runner-up for Roy Billinton Award for best student paper award at
16th International Conference on Probabilistic Methods Applied to Power
Systems (PMAPS 2020) | null | null | null | stat.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper introduces a generalised version of importance subsampling for
time series reduction/aggregation in optimisation-based power system planning
models. Recent studies indicate that reliably determining optimal electricity
(investment) strategy under climate variability requires the consideration of
multiple years of demand and weather data. However, solving planning models
over long simulation lengths is typically computationally unfeasible, and
established time series reduction approaches induce significant errors. The
importance subsampling method reliably estimates long-term planning model
outputs at greatly reduced computational cost, allowing the consideration of
multi-decadal samples. The key innovation is a systematic identification and
preservation of relevant extreme events in modeling subsamples. Simulation
studies on generation and transmission expansion planning models illustrate the
method's enhanced performance over established "representative days" clustering
approaches. The models, data and sample code are made available as open-source
software.
| [
{
"version": "v1",
"created": "Mon, 24 Aug 2020 10:14:54 GMT"
},
{
"version": "v2",
"created": "Tue, 25 Aug 2020 13:21:51 GMT"
}
] | 2020-08-26T00:00:00 | [
[
"Hilbers",
"Adriaan P",
""
],
[
"Brayshaw",
"David J",
""
],
[
"Gandy",
"Axel",
""
]
] | |
2410.16665 | Jing-Jing Li | Jing-Jing Li, Valentina Pyatkin, Max Kleiman-Weiner, Liwei Jiang,
Nouha Dziri, Anne G. E. Collins, Jana Schaich Borg, Maarten Sap, Yejin Choi,
Sydney Levine | SafetyAnalyst: Interpretable, transparent, and steerable safety
moderation for AI behavior | null | null | null | null | cs.CL cs.CY | http://creativecommons.org/licenses/by/4.0/ | The ideal AI safety moderation system would be both structurally
interpretable (so its decisions can be reliably explained) and steerable (to
align to safety standards and reflect a community's values), which current
systems fall short on. To address this gap, we present SafetyAnalyst, a novel
AI safety moderation framework. Given an AI behavior, SafetyAnalyst uses
chain-of-thought reasoning to analyze its potential consequences by creating a
structured "harm-benefit tree," which enumerates harmful and beneficial actions
and effects the AI behavior may lead to, along with likelihood, severity, and
immediacy labels that describe potential impact on any stakeholders.
SafetyAnalyst then aggregates all harmful and beneficial effects into a
harmfulness score using fully interpretable weight parameters, which can be
aligned to particular safety preferences. We applied this conceptual framework
to develop, test, and release an open-source LLM prompt safety classification
system, distilled from 18.5 million harm-benefit features generated by frontier
LLMs on 19k prompts. On a comprehensive set of prompt safety benchmarks, we
show that SafetyReporter (average F1=0.81) outperforms existing LLM safety
moderation systems (average F1$<$0.72) on prompt safety classification, while
offering the additional advantages of interpretability, transparency, and
steerability.
| [
{
"version": "v1",
"created": "Tue, 22 Oct 2024 03:38:37 GMT"
},
{
"version": "v2",
"created": "Fri, 31 Jan 2025 18:01:12 GMT"
}
] | 2025-02-03T00:00:00 | [
[
"Li",
"Jing-Jing",
""
],
[
"Pyatkin",
"Valentina",
""
],
[
"Kleiman-Weiner",
"Max",
""
],
[
"Jiang",
"Liwei",
""
],
[
"Dziri",
"Nouha",
""
],
[
"Collins",
"Anne G. E.",
""
],
[
"Borg",
"Jana Schaich",
""
],
[
"Sap",
"Maarten",
""
],
[
"Choi",
"Yejin",
""
],
[
"Levine",
"Sydney",
""
]
] | |
2002.05468 | Thomas Gobet | Thomas Gobet, Anthony Henderson, Ivan Marin | Braid groups of normalizers of reflection subgroups | 22 pages. To appear in Annales de l'Institut Fourier | null | null | null | math.RT math.GR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Let $W_0$ be a reflection subgroup of a finite complex reflection group $W$,
and let $B_0$ and $B$ be their respective braid groups. In order to construct a
Hecke algebra $\widetilde{H}_0$ for the normalizer $N_W(W_0)$, one first
considers a natural subquotient $\widetilde{B}_0$ of $B$ which is an extension
of $N_W(W_0)/W_0$ by $B_0$. We prove that this extension is split when $W$ is a
Coxeter group, and deduce a standard basis for the Hecke algebra
$\widetilde{H}_0$. We also give classes of both split and non-split examples in
the non-Coxeter case.
| [
{
"version": "v1",
"created": "Thu, 13 Feb 2020 12:16:05 GMT"
},
{
"version": "v2",
"created": "Tue, 24 Nov 2020 16:33:41 GMT"
}
] | 2020-11-25T00:00:00 | [
[
"Gobet",
"Thomas",
""
],
[
"Henderson",
"Anthony",
""
],
[
"Marin",
"Ivan",
""
]
] | |
1012.4344 | Harold Steinacker | Daniel N. Blaschke, Harold Steinacker, Michael Wohlgenannt | Heat kernel expansion and induced action for the matrix model Dirac
operator | 44 pages | JHEP 1103:002,2011 | 10.1007/JHEP03(2011)002 | UWThPh-2010-14 | hep-th gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the quantum effective action induced by integrating out fermions
in Yang-Mills matrix models on a 4-dimensional background, expanded in powers
of a gauge-invariant UV cutoff. The resulting action is recast into the form of
generalized matrix models, manifestly preserving the SO(D) symmetry of the bare
action. This provides noncommutative (NC) analogs of the Seeley-de Witt
coefficients for the emergent gravity which arises on NC branes, such as
curvature terms. From the gauge theory point of view, this provides strong
evidence that the NC N=4 SYM has a hidden SO(10) symmetry even at the quantum
level, which is spontaneously broken by the space-time background. The
geometrical view proves to be very powerful, and allows to predict non-trivial
loop computations in the gauge theory.
| [
{
"version": "v1",
"created": "Mon, 20 Dec 2010 14:28:19 GMT"
}
] | 2011-03-18T00:00:00 | [
[
"Blaschke",
"Daniel N.",
""
],
[
"Steinacker",
"Harold",
""
],
[
"Wohlgenannt",
"Michael",
""
]
] | |
astro-ph/0401312 | Yoel Rephaeli | Yoel Rephaeli and Duane Gruber | Spectral Analysis of RXTE Observations of A3667 | 7 pages, 1 figure; ApJ, in press | Astrophys.J. 606 (2004) 825-828 | 10.1086/383123 | null | astro-ph | null | X-ray emission from the cluster of galaxies A3667 was measured by the PCA and
HEXTE experiments aboard the RXTE satellite during the period December 2001 -
July 2002. Analysis of the ~141 ks RXTE observation and lower energy ASCA/GIS
data, yields only marginalevidence for a secondary power-law emission component
in the spectrum. The 90% confidence upper limit on nonthermal emission in the
15-35 keV band is determined to be 2.6x10^{-12} erg/(cm^{2}s). When combined
with the measured radio flux and spectral index of the dominant region of
extended radio emission, this upper limit implies a lower limit of ~0.4
microgauss on the mean, volume-averaged intracluster magnetic field in A3667.
| [
{
"version": "v1",
"created": "Thu, 15 Jan 2004 19:32:16 GMT"
}
] | 2009-11-10T00:00:00 | [
[
"Rephaeli",
"Yoel",
""
],
[
"Gruber",
"Duane",
""
]
] | |
hep-ph/0004205 | Manuel Drees | Abdelhak Djouadi (Univ. de Montpellier) and Manuel Drees (TU Munich) | QCD Corrections to Neutralino-Nucleon Scattering | LaTeX with equation.sty, 12 pages, 2 PS-figures | Phys.Lett. B484 (2000) 183-191 | 10.1016/S0370-2693(00)00661-4 | PM/00-14, TUM-HEP-370-00 | hep-ph astro-ph | null | We calculate the dominant loop corrections from both standard and
supersymmetric QCD to the effective coupling of neutralinos to nucleons. The
potentially largest corrections come from gluino-squark loop contributions to
the Higgs boson couplings to quarks; these corrections also affect the leading
spin-independent squark exchange contribution. Ordinary QCD corrections to the
effective coupling of CP-even Higgs bosons to two gluons are also sizable. For
large $\tanb$ values, i.e. in the region of parameter space probed by current
and near-future direct Dark-Matter search experiments, the total corrections
can exceed a factor of three.
| [
{
"version": "v1",
"created": "Fri, 21 Apr 2000 15:29:06 GMT"
}
] | 2009-10-31T00:00:00 | [
[
"Djouadi",
"Abdelhak",
"",
"Univ. de Montpellier"
],
[
"Drees",
"Manuel",
"",
"TU Munich"
]
] | |
2206.11331 | Wolfgang Altmannshofer | Wolfgang Altmannshofer, Flavio Archilli | Rare decays of b and c hadrons | 38 pages, 1 figure, 3 tables; contribution to Snowmass 2021;
solicited whitepaper for RF1; v2: discussion of di-neutrino decays added;
references added | null | null | null | hep-ph hep-ex | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this white paper for the Snowmass process, we review the status and
prospects of the field of rare decays of b and c hadrons. The role that rare
decays play in the search for physics beyond the Standard Model is emphasised.
We stress the complementarity of a large set of relevant processes and outline
the most promising directions. The experimental opportunities at Belle II, BES
III, ATLAS, CMS, LHCb, and at future machines are discussed. We also summarize
the challenges that need to be addressed on the theory side to achieve theory
uncertainties for rare decays that match the expected experimental
sensitivities.
| [
{
"version": "v1",
"created": "Wed, 22 Jun 2022 19:15:16 GMT"
},
{
"version": "v2",
"created": "Sun, 10 Jul 2022 22:00:53 GMT"
}
] | 2022-07-12T00:00:00 | [
[
"Altmannshofer",
"Wolfgang",
""
],
[
"Archilli",
"Flavio",
""
]
] | |
1903.10764 | Amir Atapour Abarghouei | Amir Atapour-Abarghouei and Toby P. Breckon | Veritatem Dies Aperit- Temporally Consistent Depth Prediction Enabled by
a Multi-Task Geometric and Semantic Scene Understanding Approach | CVPR 2019 | null | null | null | cs.CV | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Robust geometric and semantic scene understanding is ever more important in
many real-world applications such as autonomous driving and robotic navigation.
In this paper, we propose a multi-task learning-based approach capable of
jointly performing geometric and semantic scene understanding, namely depth
prediction (monocular depth estimation and depth completion) and semantic scene
segmentation. Within a single temporally constrained recurrent network, our
approach uniquely takes advantage of a complex series of skip connections,
adversarial training and the temporal constraint of sequential frame recurrence
to produce consistent depth and semantic class labels simultaneously. Extensive
experimental evaluation demonstrates the efficacy of our approach compared to
other contemporary state-of-the-art techniques.
| [
{
"version": "v1",
"created": "Tue, 26 Mar 2019 09:59:46 GMT"
},
{
"version": "v2",
"created": "Fri, 19 Jul 2019 09:28:14 GMT"
}
] | 2019-07-22T00:00:00 | [
[
"Atapour-Abarghouei",
"Amir",
""
],
[
"Breckon",
"Toby P.",
""
]
] | |
2208.06448 | Rafael Rodriguez Sanchez | Rafael Rodriguez-Sanchez, Benjamin A. Spiegel, Jennifer Wang, Roma
Patel, Stefanie Tellex and George Konidaris | RLang: A Declarative Language for Describing Partial World Knowledge to
Reinforcement Learning Agents | null | null | null | null | cs.AI cs.LG | http://creativecommons.org/licenses/by/4.0/ | We introduce RLang, a domain-specific language (DSL) for communicating domain
knowledge to an RL agent. Unlike existing RL DSLs that ground to
\textit{single} elements of a decision-making formalism (e.g., the reward
function or policy), RLang can specify information about every element of a
Markov decision process. We define precise syntax and grounding semantics for
RLang, and provide a parser that grounds RLang programs to an
algorithm-agnostic \textit{partial} world model and policy that can be
exploited by an RL agent. We provide a series of example RLang programs
demonstrating how different RL methods can exploit the resulting knowledge,
encompassing model-free and model-based tabular algorithms, policy gradient and
value-based methods, hierarchical approaches, and deep methods.
| [
{
"version": "v1",
"created": "Fri, 12 Aug 2022 18:20:47 GMT"
},
{
"version": "v2",
"created": "Tue, 16 Aug 2022 22:13:44 GMT"
},
{
"version": "v3",
"created": "Tue, 30 May 2023 15:07:56 GMT"
}
] | 2023-05-31T00:00:00 | [
[
"Rodriguez-Sanchez",
"Rafael",
""
],
[
"Spiegel",
"Benjamin A.",
""
],
[
"Wang",
"Jennifer",
""
],
[
"Patel",
"Roma",
""
],
[
"Tellex",
"Stefanie",
""
],
[
"Konidaris",
"George",
""
]
] | |
2412.05314 | Urvashi Joshi | Urvashi Joshi, Aniruddha Kumar Sharma, Rajan Arora | Invariance Analysis, Symmetry Reduction and Conservation Laws for
Biological Population in Porous Media | null | null | null | null | math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This research paper talks about using complex mathematical tools to study and
figure out the behavior of biological populations in porous media. Porous media
offer a unique environment where various factors, including fluid flow and
nutrient diffusion, significantly influence population dynamics. The theory of
Lie symmetries is used to find inherent symmetries in the governing equation of
the population model, helping to find conservation laws and invariant
solutions. The derivation and analysis of the optimal system provide insights
into the most influential parameters affecting population growth and
distribution. Furthermore, the study explores the construction of invariant
solutions, which aid in characterizing long-term population behavior. The
article concludes with the non-linear self-adjointness property and
conservation laws for the model.
| [
{
"version": "v1",
"created": "Fri, 29 Nov 2024 17:16:22 GMT"
}
] | 2024-12-10T00:00:00 | [
[
"Joshi",
"Urvashi",
""
],
[
"Sharma",
"Aniruddha Kumar",
""
],
[
"Arora",
"Rajan",
""
]
] | |
nucl-th/9905028 | Joern Knoll | Yu. B. Ivanov, J. Knoll and D. N. Voskresensky | Resonance Transport and Kinetic Entropy | 50 pages, submitted to Nucl. Phys. A | Nucl.Phys.A672:313-356,2000 | 10.1016/S0375-9474(99)00559-X | null | nucl-th astro-ph cond-mat.stat-mech hep-ph | null | Within the real-time formulation of nonequilibrium field theory, generalized
transport equations are derived avoiding the standard quasiparticle
approximation. They permit to include unstable particles into the transport
scheme. In order to achieve a self-consistent, conserving and thermodynamically
consistent description, we generalize the Baym's $\Phi$-functional method to
genuine nonequilibrium processes. The developed transport description naturally
includes all those quantum features already inherent in the corresponding
equilibrium limit. Memory effects appearing in collision term diagrams of
higher order are discussed. The variational properties of $\Phi$-functional
permit to derive a generalized expression for the non-equilibrium kinetic
entropy flow, which includes fluctuations and mass width effects. In special
cases an $H$-theorem is demonstrated implying that the entropy can only
increase with time. Memory effects in the kinetic terms provide corrections to
the kinetic entropy flow that in equilibrium limit recover the famous bosonic
type $T^3 \ln T$ correction to the specific heat of Fermi liquids like
Helium-3.
| [
{
"version": "v1",
"created": "Fri, 14 May 1999 13:25:56 GMT"
}
] | 2011-07-19T00:00:00 | [
[
"Ivanov",
"Yu. B.",
""
],
[
"Knoll",
"J.",
""
],
[
"Voskresensky",
"D. N.",
""
]
] | |
1007.0977 | David Bohlender | David A. Bohlender, J.B. Rice, and P. Hechler | Doppler imaging of the helium-variable star a Cen | 9 pages, 9 figures | null | 10.1051/0004-6361/201014157 | null | astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The helium-peculiar star a Cen exhibits line profile variations of elements
such as iron, nitrogen and oxygen in addition to its well-known extreme helium
variability. New high S/N, high-resolution spectra are used to perform a
quantitative measurement of the abundances of the star and determine the
relation of the concentrations of the heavier elements on the surface of the
star to the helium concentration and the magnetic field orientation. Doppler
images have been created using programs described in earlier papers by Rice and
others. An alternative surface abundance mapping code has been used to model
the helium line variations after our Doppler imaging of certain individual
helium lines produced mediocre results. We confirm the long-known existence of
helium-rich and helium-poor hemispheres on a Cen and we measure a difference of
more than two orders of magnitude in helium abundance from one side of the star
to the other. Helium is overabundant by a factor of about 5 over much of the
helium-rich hemisphere. Of particular note is our discovery that the
helium-poor hemisphere has a very high abundance of helium-3, approximately
equal to the helium-4 abundance. a Cen is therefore a new member of the small
group of helium-3 stars and the first well-established magnetic member of the
class. For the three metals investigated here, there are two strong
concentrations of abundance near the equator consistent with the positive
magnetic maximum and two somewhat weaker concentrations of abundance where the
helium concentration is centered and roughly where the negative peak of the
magnetic field would be found. Another strong concentration is found near the
equator and this is not explainable in terms of any simple symmetry with the
helium abundance or the apparent magnetic field main polar locations.
| [
{
"version": "v1",
"created": "Tue, 6 Jul 2010 18:40:12 GMT"
}
] | 2015-05-19T00:00:00 | [
[
"Bohlender",
"David A.",
""
],
[
"Rice",
"J. B.",
""
],
[
"Hechler",
"P.",
""
]
] | |
2211.04573 | Ozdemir Can Kara | Nethra Venkatayogi, Ozdemir Can Kara, Jeff Bonyun, Naruhiko Ikoma, and
Farshid Alambeigi | Classification of Colorectal Cancer Polyps via Transfer Learning and
Vision-Based Tactile Sensing | Accepted to IEEE Sensors 2022 Conference | null | null | null | eess.IV cs.CV cs.RO | http://creativecommons.org/licenses/by-nc-nd/4.0/ | In this study, to address the current high earlydetection miss rate of
colorectal cancer (CRC) polyps, we explore the potentials of utilizing transfer
learning and machine learning (ML) classifiers to precisely and sensitively
classify the type of CRC polyps. Instead of using the common colonoscopic
images, we applied three different ML algorithms on the 3D textural image
outputs of a unique vision-based surface tactile sensor (VS-TS). To collect
realistic textural images of CRC polyps for training the utilized ML
classifiers and evaluating their performance, we first designed and additively
manufactured 48 types of realistic polyp phantoms with different hardness,
type, and textures. Next, the performance of the used three ML algorithms in
classifying the type of fabricated polyps was quantitatively evaluated using
various statistical metrics.
| [
{
"version": "v1",
"created": "Tue, 8 Nov 2022 21:47:36 GMT"
}
] | 2022-11-10T00:00:00 | [
[
"Venkatayogi",
"Nethra",
""
],
[
"Kara",
"Ozdemir Can",
""
],
[
"Bonyun",
"Jeff",
""
],
[
"Ikoma",
"Naruhiko",
""
],
[
"Alambeigi",
"Farshid",
""
]
] | |
2203.15113 | Mykhaylo Shkolnikov | Sergey Nadtochiy, Mykhaylo Shkolnikov | Stefan problem with surface tension: global existence of physical
solutions under radial symmetry | 30 pages, 1 figure | null | null | null | math.PR math-ph math.AP math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the Stefan problem with surface tension, also known as the
Stefan-Gibbs-Thomson problem, in an ambient space of arbitrary dimension.
Assuming the radial symmetry of the initial data we introduce a novel
"probabilistic" notion of solution, which can accommodate the discontinuities
in time (of the radius) of the evolving aggregate. Our main result establishes
the global existence of a probabilistic solution satisfying the natural upper
bound on the sizes of the discontinuities. Moreover, we prove that the upper
bound is sharp in dimensions d>2, in the sense that none of the discontinuities
in the solution can be decreased in magnitude. The detailed analysis of the
discontinuities, via appropriate stochastic representations, differentiates
this work from the previous literature on weak solutions to the Stefan problem
with surface tension.
| [
{
"version": "v1",
"created": "Mon, 28 Mar 2022 21:41:29 GMT"
}
] | 2022-03-30T00:00:00 | [
[
"Nadtochiy",
"Sergey",
""
],
[
"Shkolnikov",
"Mykhaylo",
""
]
] | |
1712.08669 | Mimoza Zografi | Mimoza Zografi and Evdokia Xekalaki | Modeling Spatial Overdispersion with the Generalized Waring Process | null | null | null | null | math.PR math.ST stat.ME stat.TH | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Modeling spatial overdispersion requires point processes models with finite
dimensional distributions that are overdisperse relative to the Poisson.
Fitting such models usually heavily relies on the properties of stationarity,
ergodicity, and orderliness. And, though processes based on negative binomial
finite dimensional distributions have been widely considered, they typically
fail to simultaneously satisfy the three required properties for fitting.
Indeed, it has been conjectured by Diggle and Milne that no negative binomial
model can satisfy all three properties. In light of this, we change
perspective, and construct a new process based on a different overdisperse
count model, the Generalized Waring Distribution. While comparably tractable
and flexible to negative binomial processes, the Generalized Waring process is
shown to possess all required properties, and additionally span the negative
binomial and Poisson processes as limiting cases. In this sense, the GW process
provides an approximate resolution to the conundrum highlighted by Diggle and
Milne.
| [
{
"version": "v1",
"created": "Fri, 22 Dec 2017 22:00:27 GMT"
}
] | 2018-01-12T00:00:00 | [
[
"Zografi",
"Mimoza",
""
],
[
"Xekalaki",
"Evdokia",
""
]
] | |
hep-ph/9711296 | Liu Chun | Chun Liu | 1/N_c Expansion of the Heavy Baryon Isgur-Wise Functions | 7 pages, latex, no figures, to appear in Phys. Rev. D | Phys.Rev. D57 (1998) 1991-1992 | 10.1103/PhysRevD.57.1991 | SNUTP 97-034 | hep-ph | null | The 1/N_c expansion of the heavy baryon Isgur-Wise functions is discussed.
Because of the contracted SU(2N_f) light quark spin-flavor symmetry, the
universality relations among the Isgur-Wise functions of \Lambda_b to \Lambda_c
and \Sigma_b^{(*)} to \Sigma_c^{(*)} are valid up to the order of 1/N_c^2.
| [
{
"version": "v1",
"created": "Wed, 12 Nov 1997 06:46:17 GMT"
}
] | 2009-10-30T00:00:00 | [
[
"Liu",
"Chun",
""
]
] | |
1007.4322 | Jin-Li Guo | Jin-Li Guo | Relationship between exponent of power-law distributions and exponent of
cumulative distributions | 6 pages; 1 figures | null | null | null | physics.gen-ph | http://creativecommons.org/licenses/by/3.0/ | We commented on Ref.[Andrade J S, Herrmann H J, Andrade R F S, et al. Phys.
Rev. Lett. 94, 018702 (2005)] and corrected the approach to estimate the degree
distribution of the Apollonian network. However, after reading our manuscript,
Herrmann indicated that it was due to a small typographic error and Herrmann et
al. published Ref. [Andrade J S, Herrmann H J, Andrade R F S, et al. Phys. Rev.
Lett. 102, 079901 (2009)]. In this paper, the relationship between an exponent
of power-law distributions and the exponent of cumulative distributions is
studied. For power-law distribution with geometrically growing domain, we prove
that its exponent is equal to the exponent of its cumulative distribution. We
carried out numerical simulations and obtain results that are in good agreement
with the theoretical analysis.
| [
{
"version": "v1",
"created": "Sun, 25 Jul 2010 13:49:38 GMT"
},
{
"version": "v2",
"created": "Thu, 29 Jul 2010 05:37:26 GMT"
},
{
"version": "v3",
"created": "Wed, 25 Aug 2010 16:10:51 GMT"
}
] | 2010-08-26T00:00:00 | [
[
"Guo",
"Jin-Li",
""
]
] | |
2004.08163 | Yanting Fan | LHCb collaboration: R. Aaij, C. Abell\'an Beteta, T. Ackernley, B.
Adeva, M. Adinolfi, H. Afsharnia, C.A. Aidala, S. Aiola, Z. Ajaltouni, S.
Akar, J. Albrecht, F. Alessio, M. Alexander, A. Alfonso Albero, G. Alkhazov,
P. Alvarez Cartelle, A.A. Alves Jr, S. Amato, Y. Amhis, L. An, L. Anderlini,
G. Andreassi, M. Andreotti, F. Archilli, A. Artamonov, M. Artuso, K.
Arzymatov, E. Aslanides, M. Atzeni, B. Audurier, S. Bachmann, J.J. Back, S.
Baker, V. Balagura, W. Baldini, J. Baptista Leite, R.J. Barlow, S. Barsuk, W.
Barter, M. Bartolini, F. Baryshnikov, J.M. Basels, G. Bassi, V. Batozskaya,
B. Batsukh, A. Battig, A. Bay, M. Becker, F. Bedeschi, I. Bediaga, A. Beiter,
V. Belavin, S. Belin, V. Bellee, K. Belous, I. Belyaev, G. Bencivenni, E.
Ben-Haim, S. Benson, A. Berezhnoy, R. Bernet, D. Berninghoff, H.C. Bernstein,
C. Bertella, E. Bertholet, A. Bertolin, C. Betancourt, F. Betti, M.O.
Bettler, Ia. Bezshyiko, S. Bhasin, J. Bhom, M.S. Bieker, S. Bifani, P.
Billoir, A. Bizzeti, M. Bj{\o}rn, M.P. Blago, T. Blake, F. Blanc, S. Blusk,
D. Bobulska, V. Bocci, O. Boente Garcia, T. Boettcher, A. Boldyrev, A.
Bondar, N. Bondar, S. Borghi, M. Borisyak, M. Borsato, J.T. Borsuk, T.J.V.
Bowcock, A. Boyer, C. Bozzi, M.J. Bradley, S. Braun, A. Brea Rodriguez, M.
Brodski, J. Brodzicka, A. Brossa Gonzalo, D. Brundu, E. Buchanan, A.
B\"uchler-Germann, A. Buonaura, C. Burr, A. Bursche, A. Butkevich, J.S.
Butter, J. Buytaert, W. Byczynski, S. Cadeddu, H. Cai, R. Calabrese, L.
Calero Diaz, S. Cali, R. Calladine, M. Calvi, M. Calvo Gomez, P. Camargo
Magalhaes, A. Camboni, P. Campana, D.H. Campora Perez, A.F. Campoverde
Quezada, L. Capriotti, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, I.
Carli, P. Carniti, K. Carvalho Akiba, A. Casais Vidal, G. Casse, M. Cattaneo,
G. Cavallero, S. Celani, R. Cenci, J. Cerasoli, M.G. Chapman, M. Charles, Ph.
Charpentier, G. Chatzikonstantinidis, M. Chefdeville, V. Chekalina, C. Chen,
S. Chen, A. Chernov, S.-G. Chitic, V. Chobanova, S. Cholak, M. Chrzaszcz, A.
Chubykin, V. Chulikov, P. Ciambrone, M.F. Cicala, X. Cid Vidal, G. Ciezarek,
F. Cindolo, P.E.L. Clarke, M. Clemencic, H.V. Cliff, J. Closier, J.L.
Cobbledick, V. Coco, J.A.B. Coelho, J. Cogan, E. Cogneras, L. Cojocariu, P.
Collins, T. Colombo, A. Contu, N. Cooke, G. Coombs, S. Coquereau, G. Corti,
C.M. Costa Sobral, B. Couturier, D.C. Craik, J. Crkovsk\'a, A. Crocombe, M.
Cruz Torres, R. Currie, C.L. Da Silva, E. Dall'Occo, J. Dalseno, C.
D'Ambrosio, A. Danilina, P. d'Argent, A. Davis, O. De Aguiar Francisco, K. De
Bruyn, S. De Capua, M. De Cian, J.M. De Miranda, L. De Paula, M. De Serio, P.
De Simone, J.A. de Vries, C.T. Dean, W. Dean, D. Decamp, L. Del Buono, B.
Delaney, H.-P. Dembinski, A. Dendek, V. Denysenko, D. Derkach, O. Deschamps,
F. Desse, F. Dettori, B. Dey, A. Di Canto, P. Di Nezza, S. Didenko, H.
Dijkstra, V. Dobishuk, F. Dordei, M. Dorigo, A.C. dos Reis, L. Douglas, A.
Dovbnya, K. Dreimanis, M.W. Dudek, L. Dufour, P. Durante, J.M. Durham, D.
Dutta, M. Dziewiecki, A. Dziurda, A. Dzyuba, S. Easo, U. Egede, V. Egorychev,
S. Eidelman, S. Eisenhardt, S. Ek-In, L. Eklund, S. Ely, A. Ene, E. Epple, S.
Escher, J. Eschle, S. Esen, T. Evans, A. Falabella, J. Fan, Y. Fan, N.
Farley, S. Farry, D. Fazzini, P. Fedin, M. F\'eo, P. Fernandez Declara, A.
Fernandez Prieto, F. Ferrari, L. Ferreira Lopes, F. Ferreira Rodrigues, S.
Ferreres Sole, M. Ferrillo, M. Ferro-Luzzi, S. Filippov, R.A. Fini, M.
Fiorini, M. Firlej, K.M. Fischer, C. Fitzpatrick, T. Fiutowski, F. Fleuret,
M. Fontana, F. Fontanelli, R. Forty, V. Franco Lima, M. Franco Sevilla, M.
Frank, C. Frei, D.A. Friday, J. Fu, Q. Fuehring, W. Funk, E. Gabriel, T.
Gaintseva, A. Gallas Torreira, D. Galli, S. Gallorini, S. Gambetta, Y. Gan,
M. Gandelman, P. Gandini, Y. Gao, L.M. Garcia Martin, J. Garc\'ia Pardi\~nas,
B. Garcia Plana, F.A. Garcia Rosales, L. Garrido, D. Gascon, C. Gaspar, D.
Gerick, E. Gersabeck, M. Gersabeck, T. Gershon, D. Gerstel, Ph. Ghez, V.
Gibson, A. Giovent\`u, P. Gironella Gironell, L. Giubega, C. Giugliano, K.
Gizdov, V.V. Gligorov, C. G\"obel, E. Golobardes, D. Golubkov, A. Golutvin,
A. Gomes, P. Gorbounov, I.V. Gorelov, C. Gotti, E. Govorkova, J.P. Grabowski,
R. Graciani Diaz, T. Grammatico, L.A. Granado Cardoso, E. Graug\'es, E.
Graverini, G. Graziani, A. Grecu, R. Greim, P. Griffith, L. Grillo, L.
Gruber, B.R. Gruberg Cazon, C. Gu, M. Guarise, P. A. G\"unther, E. Gushchin,
A. Guth, Yu. Guz, T. Gys, T. Hadavizadeh, G. Haefeli, C. Haen, S.C. Haines,
P.M. Hamilton, Q. Han, X. Han, T.H. Hancock, S. Hansmann-Menzemer, N. Harnew,
T. Harrison, R. Hart, C. Hasse, M. Hatch, J. He, M. Hecker, K. Heijhoff, K.
Heinicke, A.M. Hennequin, K. Hennessy, L. Henry, J. Heuel, A. Hicheur, D.
Hill, M. Hilton, P.H. Hopchev, J. Hu, J. Hu, W. Hu, W. Huang, W. Hulsbergen,
T. Humair, R.J. Hunter, M. Hushchyn, D. Hutchcroft, D. Hynds, P. Ibis, M.
Idzik, P. Ilten, A. Inglessi, K. Ivshin, R. Jacobsson, S. Jakobsen, E. Jans,
B.K. Jashal, A. Jawahery, V. Jevtic, F. Jiang, M. John, D. Johnson, C.R.
Jones, B. Jost, N. Jurik, S. Kandybei, M. Karacson, J.M. Kariuki, N. Kazeev,
M. Kecke, F. Keizer, M. Kelsey, M. Kenzie, T. Ketel, B. Khanji, A. Kharisova,
K.E. Kim, T. Kirn, V.S. Kirsebom, S. Klaver, K. Klimaszewski, S. Koliiev, A.
Kondybayeva, A. Konoplyannikov, P. Kopciewicz, R. Kopecna, P. Koppenburg, M.
Korolev, I. Kostiuk, O. Kot, S. Kotriakhova, L. Kravchuk, R.D. Krawczyk, M.
Kreps, F. Kress, S. Kretzschmar, P. Krokovny, W. Krupa, W. Krzemien, W.
Kucewicz, M. Kucharczyk, V. Kudryavtsev, H.S. Kuindersma, G.J. Kunde, T.
Kvaratskheliya, D. Lacarrere, G. Lafferty, A. Lai, D. Lancierini, J.J. Lane,
G. Lanfranchi, C. Langenbruch, O. Lantwin, T. Latham, F. Lazzari, R. Le Gac,
S.H. Lee, R. Lef\`evre, A. Leflat, O. Leroy, T. Lesiak, B. Leverington, H.
Li, L. Li, X. Li, Y. Li, Z. Li, X. Liang, T. Lin, R. Lindner, V. Lisovskyi,
G. Liu, X. Liu, D. Loh, A. Loi, J. Lomba Castro, I. Longstaff, J.H. Lopes, G.
Loustau, G.H. Lovell, Y. Lu, D. Lucchesi, M. Lucio Martinez, Y. Luo, A.
Lupato, E. Luppi, O. Lupton, A. Lusiani, X. Lyu, S. Maccolini, F. Machefert,
F. Maciuc, V. Macko, P. Mackowiak, S. Maddrell-Mander, L.R. Madhan Mohan, O.
Maev, A. Maevskiy, D. Maisuzenko, M.W. Majewski, S. Malde, B. Malecki, A.
Malinin, T. Maltsev, H. Malygina, G. Manca, G. Mancinelli, R. Manera
Escalero, D. Manuzzi, D. Marangotto, J. Maratas, J.F. Marchand, U. Marconi,
S. Mariani, C. Marin Benito, M. Marinangeli, P. Marino, J. Marks, P.J.
Marshall, G. Martellotti, L. Martinazzoli, M. Martinelli, D. Martinez Santos,
F. Martinez Vidal, A. Massafferri, M. Materok, R. Matev, A. Mathad, Z. Mathe,
V. Matiunin, C. Matteuzzi, K.R. Mattioli, A. Mauri, E. Maurice, M. McCann, L.
Mcconnell, A. McNab, R. McNulty, J.V. Mead, B. Meadows, C. Meaux, G. Meier,
N. Meinert, D. Melnychuk, S. Meloni, M. Merk, A. Merli, L. Meyer Garcia, M.
Mikhasenko, D.A. Milanes, E. Millard, M.-N. Minard, O. Mineev, L. Minzoni,
S.E. Mitchell, B. Mitreska, D.S. Mitzel, A. M\"odden, A. Mogini, R.D. Moise,
T. Momb\"acher, I.A. Monroy, S. Monteil, M. Morandin, G. Morello, M.J.
Morello, J. Moron, A.B. Morris, A.G. Morris, R. Mountain, H. Mu, F. Muheim,
M. Mukherjee, M. Mulder, D. M\"uller, K. M\"uller, C.H. Murphy, D. Murray, P.
Muzzetto, P. Naik, T. Nakada, R. Nandakumar, T. Nanut, I. Nasteva, M.
Needham, I. Neri, N. Neri, S. Neubert, N. Neufeld, R. Newcombe, T.D. Nguyen,
C. Nguyen-Mau, E.M. Niel, S. Nieswand, N. Nikitin, N.S. Nolte, C. Nunez, A.
Oblakowska-Mucha, V. Obraztsov, S. Ogilvy, D.P. O'Hanlon, R. Oldeman, C.J.G.
Onderwater, J. D. Osborn, A. Ossowska, J.M. Otalora Goicochea, T.
Ovsiannikova, P. Owen, A. Oyanguren, P.R. Pais, T. Pajero, A. Palano, M.
Palutan, G. Panshin, A. Papanestis, M. Pappagallo, L.L. Pappalardo, C.
Pappenheimer, W. Parker, C. Parkes, G. Passaleva, A. Pastore, M. Patel, C.
Patrignani, A. Pearce, A. Pellegrino, M. Pepe Altarelli, S. Perazzini, D.
Pereima, P. Perret, K. Petridis, A. Petrolini, A. Petrov, S. Petrucci, M.
Petruzzo, B. Pietrzyk, G. Pietrzyk, M. Pili, D. Pinci, J. Pinzino, F. Pisani,
A. Piucci, V. Placinta, S. Playfer, J. Plews, M. Plo Casasus, F. Polci, M.
Poli Lener, M. Poliakova, A. Poluektov, N. Polukhina, I. Polyakov, E.
Polycarpo, G.J. Pomery, S. Ponce, A. Popov, D. Popov, S. Poslavskii, K.
Prasanth, L. Promberger, C. Prouve, V. Pugatch, A. Puig Navarro, H. Pullen,
G. Punzi, W. Qian, J. Qin, R. Quagliani, B. Quintana, N.V. Raab, R.I. Rabadan
Trejo, B. Rachwal, J.H. Rademacker, M. Rama, M. Ramos Pernas, M.S. Rangel, F.
Ratnikov, G. Raven, M. Reboud, F. Redi, F. Reiss, C. Remon Alepuz, Z. Ren, V.
Renaudin, S. Ricciardi, D.S. Richards, S. Richards, K. Rinnert, P. Robbe, A.
Robert, A.B. Rodrigues, E. Rodrigues, J.A. Rodriguez Lopez, M. Roehrken, A.
Rollings, V. Romanovskiy, M. Romero Lamas, A. Romero Vidal, J.D. Roth, M.
Rotondo, M.S. Rudolph, T. Ruf, J. Ruiz Vidal, A. Ryzhikov, J. Ryzka, J.J.
Saborido Silva, N. Sagidova, N. Sahoo, B. Saitta, C. Sanchez Gras, C. Sanchez
Mayordomo, R. Santacesaria, C. Santamarina Rios, M. Santimaria, E.
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H. Schindler, M. Schmelling, T. Schmelzer, B. Schmidt, O. Schneider, A.
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Schwemmer, B. Sciascia, A. Sciubba, S. Sellam, A. Semennikov, A. Sergi, N.
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Shapkin, L. Shchutska, T. Shears, L. Shekhtman, V. Shevchenko, E. Shmanin,
J.D. Shupperd, B.G. Siddi, R. Silva Coutinho, L. Silva de Oliveira, G. Simi,
S. Simone, I. Skiba, N. Skidmore, T. Skwarnicki, M.W. Slater, J.G. Smeaton,
A. Smetkina, E. Smith, I.T. Smith, M. Smith, A. Snoch, M. Soares, L. Soares
Lavra, M.D. Sokoloff, F.J.P. Soler, B. Souza De Paula, B. Spaan, E. Spadaro
Norella, P. Spradlin, F. Stagni, M. Stahl, S. Stahl, P. Stefko, O. Steinkamp,
S. Stemmle, O. Stenyakin, M. Stepanova, H. Stevens, S. Stone, S. Stracka,
M.E. Stramaglia, M. Straticiuc, S. Strokov, J. Sun, L. Sun, Y. Sun, P.
Svihra, K. Swientek, A. Szabelski, T. Szumlak, M. Szymanski, S. Taneja, Z.
Tang, T. Tekampe, F. Teubert, E. Thomas, K.A. Thomson, M.J. Tilley, V.
Tisserand, S. T'Jampens, M. Tobin, S. Tolk, L. Tomassetti, D. Torres Machado,
D.Y. Tou, E. Tournefier, M. Traill, M.T. Tran, E. Trifonova, C. Trippl, A.
Tsaregorodtsev, G. Tuci, A. Tully, N. Tuning, A. Ukleja, A. Usachov, A.
Ustyuzhanin, U. Uwer, A. Vagner, V. Vagnoni, A. Valassi, G. Valenti, M. van
Beuzekom, H. Van Hecke, E. van Herwijnen, C.B. Van Hulse, M. van Veghel, R.
Vazquez Gomez, P. Vazquez Regueiro, C. V\'azquez Sierra, S. Vecchi, J.J.
Velthuis, M. Veltri, A. Venkateswaran, M. Veronesi, M. Vesterinen, J.V. Viana
Barbosa, D. Vieira, M. Vieites Diaz, H. Viemann, X. Vilasis-Cardona, G.
Vitali, A. Vitkovskiy, A. Vollhardt, D. Vom Bruch, A. Vorobyev, V. Vorobyev,
N. Voropaev, R. Waldi, J. Walsh, J. Wang, J. Wang, J. Wang, M. Wang, Y. Wang,
Z. Wang, D.R. Ward, H.M. Wark, N.K. Watson, D. Websdale, A. Weiden, C.
Weisser, B.D.C. Westhenry, D.J. White, M. Whitehead, D. Wiedner, G.
Wilkinson, M. Wilkinson, I. Williams, M. Williams, M.R.J. Williams, T.
Williams, F.F. Wilson, W. Wislicki, M. Witek, L. Witola, G. Wormser, S.A.
Wotton, H. Wu, K. Wyllie, Z. Xiang, D. Xiao, Y. Xie, H. Xing, A. Xu, J. Xu,
L. Xu, M. Xu, Q. Xu, Z. Xu, Z. Yang, Z. Yang, Y. Yao, L.E. Yeomans, H. Yin,
J. Yu, X. Yuan, O. Yushchenko, K.A. Zarebski, M. Zavertyaev, M. Zdybal, M.
Zeng, D. Zhang, L. Zhang, S. Zhang, W.C. Zhang, Y. Zhang, A. Zhelezov, Y.
Zheng, X. Zhou, Y. Zhou, X. Zhu, V. Zhukov, J.B. Zonneveld, S. Zuccheri | Precision measurement of the $B_{c}^{+}$ meson mass | All figures and tables, along with machine-readable versions and any
supplementary material and additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-003.html | JHEP 07(2020) 123 | 10.1007/JHEP07(2020)123 | LHCb-PAPER-2020-003, CERN-EP-2020-048 | hep-ex | http://creativecommons.org/licenses/by/4.0/ | A precision measurement of the $B_{c}^{+}$ meson mass is performed using
proton-proton collision data collected with the LHCb experiment at
centre-of-mass energies of $7, 8$ and $13$ TeV, corresponding to a total
integrated luminosity of $9.0 \,{\rm fb}^{-1}$. The $B_{c}^{+}$ mesons are
reconstructed via the decays $B_{c}^{+} \rightarrow J\mskip -3mu/\mskip
-2mu\psi\mskip 2mu \pi^+$, $B_{c}^{+} \rightarrow J\mskip -3mu/\mskip
-2mu\psi\mskip 2mu \pi^+ \pi^- \pi^+$, $B_{c}^{+} \rightarrow J\mskip
-3mu/\mskip -2mu\psi\mskip 2mu p \bar{p} \pi^+$, $B_{c}^{+} \rightarrow J\mskip
-3mu/\mskip -2mu\psi\mskip 2mu D_{s}^{+}$, $B_{c}^{+} \rightarrow J\mskip
-3mu/\mskip -2mu\psi\mskip 2mu D^{0} K^{+}$ and $B_{c}^{+} \rightarrow
B_{s}^{0} \pi^{+}$. Combining the results of the individual decay channels, the
$B_{c}^{+}$ mass is measured to be $6274.47 \pm 0.27 \,({\rm stat}) \pm 0.17
\,({\rm syst}) \mathrm{\,Me\kern -0.1em V}/c^{2}$. This is the most precise
measurement of the $B_{c}^{+}$ mass to date. The difference between the
$B_{c}^{+}$ and $B_{s}^{0}$ meson masses is measured to be $907.75 \pm 0.37
\,({\rm stat}) \pm 0.27 \,({\rm syst}) \mathrm{\,Me\kern -0.1em V}/c^{2}$.
| [
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"created": "Fri, 17 Apr 2020 10:46:45 GMT"
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{
"version": "v2",
"created": "Tue, 21 Jul 2020 13:26:54 GMT"
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[
"Seyfert",
"P.",
""
],
[
"Shangase",
"D. M.",
""
],
[
"Shapkin",
"M.",
""
],
[
"Shchutska",
"L.",
""
],
[
"Shears",
"T.",
""
],
[
"Shekhtman",
"L.",
""
],
[
"Shevchenko",
"V.",
""
],
[
"Shmanin",
"E.",
""
],
[
"Shupperd",
"J. D.",
""
],
[
"Siddi",
"B. G.",
""
],
[
"Coutinho",
"R. Silva",
""
],
[
"de Oliveira",
"L. Silva",
""
],
[
"Simi",
"G.",
""
],
[
"Simone",
"S.",
""
],
[
"Skiba",
"I.",
""
],
[
"Skidmore",
"N.",
""
],
[
"Skwarnicki",
"T.",
""
],
[
"Slater",
"M. W.",
""
],
[
"Smeaton",
"J. G.",
""
],
[
"Smetkina",
"A.",
""
],
[
"Smith",
"E.",
""
],
[
"Smith",
"I. T.",
""
],
[
"Smith",
"M.",
""
],
[
"Snoch",
"A.",
""
],
[
"Soares",
"M.",
""
],
[
"Lavra",
"L. Soares",
""
],
[
"Sokoloff",
"M. D.",
""
],
[
"Soler",
"F. J. P.",
""
],
[
"De Paula",
"B. Souza",
""
],
[
"Spaan",
"B.",
""
],
[
"Norella",
"E. Spadaro",
""
],
[
"Spradlin",
"P.",
""
],
[
"Stagni",
"F.",
""
],
[
"Stahl",
"M.",
""
],
[
"Stahl",
"S.",
""
],
[
"Stefko",
"P.",
""
],
[
"Steinkamp",
"O.",
""
],
[
"Stemmle",
"S.",
""
],
[
"Stenyakin",
"O.",
""
],
[
"Stepanova",
"M.",
""
],
[
"Stevens",
"H.",
""
],
[
"Stone",
"S.",
""
],
[
"Stracka",
"S.",
""
],
[
"Stramaglia",
"M. E.",
""
],
[
"Straticiuc",
"M.",
""
],
[
"Strokov",
"S.",
""
],
[
"Sun",
"J.",
""
],
[
"Sun",
"L.",
""
],
[
"Sun",
"Y.",
""
],
[
"Svihra",
"P.",
""
],
[
"Swientek",
"K.",
""
],
[
"Szabelski",
"A.",
""
],
[
"Szumlak",
"T.",
""
],
[
"Szymanski",
"M.",
""
],
[
"Taneja",
"S.",
""
],
[
"Tang",
"Z.",
""
],
[
"Tekampe",
"T.",
""
],
[
"Teubert",
"F.",
""
],
[
"Thomas",
"E.",
""
],
[
"Thomson",
"K. A.",
""
],
[
"Tilley",
"M. J.",
""
],
[
"Tisserand",
"V.",
""
],
[
"T'Jampens",
"S.",
""
],
[
"Tobin",
"M.",
""
],
[
"Tolk",
"S.",
""
],
[
"Tomassetti",
"L.",
""
],
[
"Machado",
"D. Torres",
""
],
[
"Tou",
"D. Y.",
""
],
[
"Tournefier",
"E.",
""
],
[
"Traill",
"M.",
""
],
[
"Tran",
"M. T.",
""
],
[
"Trifonova",
"E.",
""
],
[
"Trippl",
"C.",
""
],
[
"Tsaregorodtsev",
"A.",
""
],
[
"Tuci",
"G.",
""
],
[
"Tully",
"A.",
""
],
[
"Tuning",
"N.",
""
],
[
"Ukleja",
"A.",
""
],
[
"Usachov",
"A.",
""
],
[
"Ustyuzhanin",
"A.",
""
],
[
"Uwer",
"U.",
""
],
[
"Vagner",
"A.",
""
],
[
"Vagnoni",
"V.",
""
],
[
"Valassi",
"A.",
""
],
[
"Valenti",
"G.",
""
],
[
"van Beuzekom",
"M.",
""
],
[
"Van Hecke",
"H.",
""
],
[
"van Herwijnen",
"E.",
""
],
[
"Van Hulse",
"C. B.",
""
],
[
"van Veghel",
"M.",
""
],
[
"Gomez",
"R. Vazquez",
""
],
[
"Regueiro",
"P. Vazquez",
""
],
[
"Sierra",
"C. Vázquez",
""
],
[
"Vecchi",
"S.",
""
],
[
"Velthuis",
"J. J.",
""
],
[
"Veltri",
"M.",
""
],
[
"Venkateswaran",
"A.",
""
],
[
"Veronesi",
"M.",
""
],
[
"Vesterinen",
"M.",
""
],
[
"Barbosa",
"J. V. Viana",
""
],
[
"Vieira",
"D.",
""
],
[
"Diaz",
"M. Vieites",
""
],
[
"Viemann",
"H.",
""
],
[
"Vilasis-Cardona",
"X.",
""
],
[
"Vitali",
"G.",
""
],
[
"Vitkovskiy",
"A.",
""
],
[
"Vollhardt",
"A.",
""
],
[
"Bruch",
"D. Vom",
""
],
[
"Vorobyev",
"A.",
""
],
[
"Vorobyev",
"V.",
""
],
[
"Voropaev",
"N.",
""
],
[
"Waldi",
"R.",
""
],
[
"Walsh",
"J.",
""
],
[
"Wang",
"J.",
""
],
[
"Wang",
"J.",
""
],
[
"Wang",
"J.",
""
],
[
"Wang",
"M.",
""
],
[
"Wang",
"Y.",
""
],
[
"Wang",
"Z.",
""
],
[
"Ward",
"D. R.",
""
],
[
"Wark",
"H. M.",
""
],
[
"Watson",
"N. K.",
""
],
[
"Websdale",
"D.",
""
],
[
"Weiden",
"A.",
""
],
[
"Weisser",
"C.",
""
],
[
"Westhenry",
"B. D. C.",
""
],
[
"White",
"D. J.",
""
],
[
"Whitehead",
"M.",
""
],
[
"Wiedner",
"D.",
""
],
[
"Wilkinson",
"G.",
""
],
[
"Wilkinson",
"M.",
""
],
[
"Williams",
"I.",
""
],
[
"Williams",
"M.",
""
],
[
"Williams",
"M. R. J.",
""
],
[
"Williams",
"T.",
""
],
[
"Wilson",
"F. F.",
""
],
[
"Wislicki",
"W.",
""
],
[
"Witek",
"M.",
""
],
[
"Witola",
"L.",
""
],
[
"Wormser",
"G.",
""
],
[
"Wotton",
"S. A.",
""
],
[
"Wu",
"H.",
""
],
[
"Wyllie",
"K.",
""
],
[
"Xiang",
"Z.",
""
],
[
"Xiao",
"D.",
""
],
[
"Xie",
"Y.",
""
],
[
"Xing",
"H.",
""
],
[
"Xu",
"A.",
""
],
[
"Xu",
"J.",
""
],
[
"Xu",
"L.",
""
],
[
"Xu",
"M.",
""
],
[
"Xu",
"Q.",
""
],
[
"Xu",
"Z.",
""
],
[
"Yang",
"Z.",
""
],
[
"Yang",
"Z.",
""
],
[
"Yao",
"Y.",
""
],
[
"Yeomans",
"L. E.",
""
],
[
"Yin",
"H.",
""
],
[
"Yu",
"J.",
""
],
[
"Yuan",
"X.",
""
],
[
"Yushchenko",
"O.",
""
],
[
"Zarebski",
"K. A.",
""
],
[
"Zavertyaev",
"M.",
""
],
[
"Zdybal",
"M.",
""
],
[
"Zeng",
"M.",
""
],
[
"Zhang",
"D.",
""
],
[
"Zhang",
"L.",
""
],
[
"Zhang",
"S.",
""
],
[
"Zhang",
"W. C.",
""
],
[
"Zhang",
"Y.",
""
],
[
"Zhelezov",
"A.",
""
],
[
"Zheng",
"Y.",
""
],
[
"Zhou",
"X.",
""
],
[
"Zhou",
"Y.",
""
],
[
"Zhu",
"X.",
""
],
[
"Zhukov",
"V.",
""
],
[
"Zonneveld",
"J. B.",
""
],
[
"Zuccheri",
"S.",
""
]
] | |
2208.13003 | Yamin Arefeen | Yamin Arefeen, Junshen Xu, Molin Zhang, Zijing Dong, Fuyixue Wang,
Jacob White, Berkin Bilgic, Elfar Adalsteinsson | Latent Signal Models: Learning Compact Representations of Signal
Evolution for Improved Time-Resolved, Multi-contrast MRI | null | null | 10.1002/mrm.29657 | null | eess.SP physics.med-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Purpose: Training auto-encoders on simulated signal evolution and inserting
the decoder into the forward model improves reconstructions through more
compact, Bloch-equation-based representations of signal in comparison to linear
subspaces.
Methods: Building on model-based nonlinear and linear subspace techniques
that enable reconstruction of signal dynamics, we train auto-encoders on
dictionaries of simulated signal evolution to learn more compact, non-linear,
latent representations. The proposed Latent Signal Model framework inserts the
decoder portion of the auto-encoder into the forward model and directly
reconstructs the latent representation. Latent Signal Models essentially serve
as a proxy for fast and feasible differentiation through the Bloch-equations
used to simulate signal. This work performs experiments in the context of
T2-shuffling, gradient echo EPTI, and MPRAGE-shuffling. We compare how
efficiently auto-encoders represent signal evolution in comparison to linear
subspaces. Simulation and in-vivo experiments then evaluate if reducing degrees
of freedom by inserting the decoder into the forward model improves
reconstructions in comparison to subspace constraints.
Results: An auto-encoder with one real latent variable represents FSE, EPTI,
and MPRAGE signal evolution as well as linear subspaces characterized by four
basis vectors. In simulated/in-vivo T2-shuffling and in-vivo EPTI experiments,
the proposed framework achieves consistent quantitative NRMSE and qualitative
improvement over linear approaches. From qualitative evaluation, the proposed
approach yields images with reduced blurring and noise amplification in MPRAGE
shuffling experiments.
Conclusion: Directly solving for non-linear latent representations of signal
evolution improves time-resolved MRI reconstructions through reduced degrees of
freedom.
| [
{
"version": "v1",
"created": "Sat, 27 Aug 2022 13:05:56 GMT"
}
] | 2023-05-02T00:00:00 | [
[
"Arefeen",
"Yamin",
""
],
[
"Xu",
"Junshen",
""
],
[
"Zhang",
"Molin",
""
],
[
"Dong",
"Zijing",
""
],
[
"Wang",
"Fuyixue",
""
],
[
"White",
"Jacob",
""
],
[
"Bilgic",
"Berkin",
""
],
[
"Adalsteinsson",
"Elfar",
""
]
] | |
2108.06346 | Zi Hong Liu | Zi Hong Liu, Matthias Vojta, Fakher F. Assaad, Lukas Janssen | Metallic and Deconfined Quantum Criticality in Dirac Systems | 12 pages, 11 figures | Phys. Rev. Lett. 128, 087201 (2022) | 10.1103/PhysRevLett.128.087201 | null | cond-mat.str-el hep-lat | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by the physics of spin-orbital liquids, we study a model of
interacting Dirac fermions on a bilayer honeycomb lattice at half filling,
featuring an explicit global SO(3)$\times$U(1) symmetry. Using large-scale
auxiliary-field quantum Monte Carlo (QMC) simulations, we locate two
zero-temperature phase transitions as function of increasing interaction
strength. First, we observe a continuous transition from the weakly-interacting
semimetal to a different semimetallic phase in which the SO(3) symmetry is
spontaneously broken and where two out of three Dirac cones acquire a mass gap.
The associated quantum critical point can be understood in terms of a
Gross-Neveu-SO(3) theory. Second, we subsequently observe a transition towards
an insulating phase in which the SO(3) symmetry is restored and the U(1)
symmetry is spontaneously broken. While strongly first order at the mean-field
level, the QMC data is consistent with a direct and continuous transition. It
is thus a candidate for a new type of deconfined quantum critical point that
features gapless fermionic degrees of freedom.
| [
{
"version": "v1",
"created": "Fri, 13 Aug 2021 18:00:05 GMT"
},
{
"version": "v2",
"created": "Thu, 24 Feb 2022 12:38:57 GMT"
}
] | 2022-02-25T00:00:00 | [
[
"Liu",
"Zi Hong",
""
],
[
"Vojta",
"Matthias",
""
],
[
"Assaad",
"Fakher F.",
""
],
[
"Janssen",
"Lukas",
""
]
] | |
1101.3837 | Abuzer Yakaryilmaz | Andris Ambainis and Abuzer Yakaryilmaz | Superiority of exact quantum automata for promise problems | A completely new version. 6 pages. (The previous version contains
some errata.) | Information Processing Letters, Volume 112, Issue 7, 31 March
2012, Pages 289-291 | 10.1016/j.ipl.2012.01.001 | null | cs.CC cs.FL quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this note, we present an infinite family of promise problems which can be
solved exactly by just tuning transition amplitudes of a two-state quantum
finite automata operating in realtime mode, whereas the size of the
corresponding classical automata grow without bound.
| [
{
"version": "v1",
"created": "Thu, 20 Jan 2011 08:17:25 GMT"
},
{
"version": "v2",
"created": "Tue, 16 Aug 2011 13:50:08 GMT"
}
] | 2014-01-29T00:00:00 | [
[
"Ambainis",
"Andris",
""
],
[
"Yakaryilmaz",
"Abuzer",
""
]
] | |
1801.06937 | Jeremy Darling | Jeremy Darling | The $^{87}$Rubidium Atomic Clock Maser in Giant Stars | 2 pages, published in RNAAS | null | null | null | astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We conducted a Green Bank Telescope search for the ground state 6.8 GHz
hyperfine transition of rubidium ($^{87}$Rb) toward giant stars detected in Rb
I optical resonance lines. The spin-flip transition of $^{87}$Rb is one of the
principal transitions used in atomic clocks, in addition to the hydrogen 21 cm
maser and the $^{133}$Cs hyperfine transition (which defines the second). The
optical lines of $^{87}$Rb and $^{85}$Rb can together pump the 6.8 GHz
transition to form a maser, and the same optical pumping used in atomic clocks
may occur in the atmospheres of evolved stars. No 6.8 GHz $^{87}$Rb lines were
detected above 3.8$\sigma$.
| [
{
"version": "v1",
"created": "Mon, 22 Jan 2018 02:19:43 GMT"
}
] | 2018-01-23T00:00:00 | [
[
"Darling",
"Jeremy",
""
]
] | |
2012.02545 | Piotr Lebiedowicz | Antoni Szczurek and Piotr Lebiedowicz | Inclusive production of $f_2(1270)$ tensor mesons at the LHC via
gluon-gluon fusion in the $k_t$-factorization approach | 6 pages, 3 figures, Proceedings of The 40th International Conference
on High Energy physics - ICHEP2020, July 28 - August 6, 2020, Prague, Czech
Republic (virtual meeting) | null | null | null | hep-ph hep-ex | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The cross section for inclusive production of $f_2(1270)$ meson is
calculated. We include both the mechanism of gluon-gluon fusion as well as the
$\pi \pi$ final-state rescattering. The contribution of the gluon-gluon fusion
is calculated within the $k_t$-factorization approach with modern unintegrated
gluon distribution functions (UGDFs). Some parameters for the $g^* g^* \to f_2$
vertex are extracted from the $\gamma \gamma \to f_2(1270) \to \pi \pi$
reactions. The results strongly depend on the parametrization of the $g^* g^*
\to f_2(1270)$ form factor. Results of our model are compared to the ALICE
preliminary data. The gluon-gluon fusion does not explain low-$p_t$ data but
could be the dominant mechanism at somewhat larger meson transverse momenta. By
adjusting some parameters the pion-pion rescattering can explain the low-$p_t$
region.
| [
{
"version": "v1",
"created": "Fri, 4 Dec 2020 12:00:30 GMT"
}
] | 2020-12-07T00:00:00 | [
[
"Szczurek",
"Antoni",
""
],
[
"Lebiedowicz",
"Piotr",
""
]
] | |
cond-mat/9703189 | Zanchi | D. Zanchi and H. J. Schulz | Weakly correlated electrons on a square lattice: a renormalization group
theory | 12 pages, REVTEX, 3 figures included, submitted to Phys. Rev. Lett | null | 10.1209/epl/i1998-00462-x | null | cond-mat.supr-con cond-mat.str-el | null | We study the weakly interacting Hubbard model on the square lattice using a
one-loop renormalization group approach. The transition temperature T_c between
the metallic and (nearly) ordered states is found. In the parquet regime, (T_c
>> |mu|), the dominant correlations at temperatures below T_c are
antiferromagnetic while in the BCS regime (T_c << |mu|) at T_c the d-wave
singlet pairing susceptibility is most divergent.
| [
{
"version": "v1",
"created": "Thu, 20 Mar 1997 18:28:00 GMT"
}
] | 2009-10-30T00:00:00 | [
[
"Zanchi",
"D.",
""
],
[
"Schulz",
"H. J.",
""
]
] | |
0812.2942 | Iosif Bena | Iosif Bena, Nikolay Bobev, Clement Ruef, and Nicholas P. Warner | Supertubes in Bubbling Backgrounds: Born-Infeld Meets Supergravity | 60 pages, 2 figures, LaTeX | JHEP 0907:106,2009 | 10.1088/1126-6708/2009/07/106 | IPhT-T08/211 | hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss two ways in which one can study two-charge supertubes as
components of generic three-charge, three-dipole charge supergravity solutions.
The first is using the Born-Infeld action of the supertubes, and the second is
via the complete supergravity solution. Even though the Born-Infeld description
is only a probe approximation, we find that it gives exactly the same essential
physics as the complete supergravity solution. Since supertubes can depend on
arbitrary functions, our analysis strengthens the evidence for the existence of
three-charge black-hole microstate geometries that depend on an infinite set of
parameters, and sets the stage for the computation of the entropy of these
backgrounds. We examine numerous other aspects of supertubes in three-charge,
three-dipole charge supergravity backgrounds, including chronology protection
during mergers, the contribution of supertubes to the charges and angular
momenta, and the enhancement of their entropy. In particular, we find that
entropy enhancement affects supertube fluctuations both along the internal and
the spacetime directions, and we prove that the charges that give the enhanced
entropy can be much larger than the asymptotic charges of the solution. We also
re-examine the embedding of five-dimensional black rings in Taub-NUT, and show
that in different coordinate patches a ring can correspond to different
four-dimensional black holes. Last, but not least, we show that all the
three-charge black hole microstate geometries constructed so far can be
embedded in AdS_3 x S^3, and hence can be related to states of the D1-D5 CFT.
| [
{
"version": "v1",
"created": "Mon, 15 Dec 2008 23:38:15 GMT"
}
] | 2011-06-02T00:00:00 | [
[
"Bena",
"Iosif",
""
],
[
"Bobev",
"Nikolay",
""
],
[
"Ruef",
"Clement",
""
],
[
"Warner",
"Nicholas P.",
""
]
] | |
cond-mat/0502644 | Silvio R. Dahmen | Z. Farkas, S. R. Dahmen and D. E. Wolf | Static Versus Dynamic Friction: The Role of Coherence | 10 pages, 2 figures, revtex4 | J. Stat. Mech.: Theor. Exp. (2005) P06015 | 10.1088/1742-5468/2005/06/P06015 | null | cond-mat.mtrl-sci | null | A simple model for solid friction is analyzed. It is based on tangential
springs representing interlocked asperities of the surfaces in contact. Each
spring is given a maximal strain according to a probability distribution. At
their maximal strain the springs break irreversibly. Initially all springs are
assumed to have zero strain, because at static contact local elastic stresses
are expected to relax. Relative tangential motion of the two solids leads to a
loss of coherence of the initial state: The springs get out of phase due to
differences in their sizes. This mechanism alone is shown to lead to a
difference between static and dynamic friction forces already. We find that in
this case the ratio of the static and dynamic coefficients decreases with
increasing relative width of the probability distribution, and has a lower
bound of 1 and an upper bound of 2.
| [
{
"version": "v1",
"created": "Sun, 27 Feb 2005 20:22:44 GMT"
}
] | 2007-05-23T00:00:00 | [
[
"Farkas",
"Z.",
""
],
[
"Dahmen",
"S. R.",
""
],
[
"Wolf",
"D. E.",
""
]
] | |
1409.0430 | Alessandro Fortunati | Alessandro Fortunati, Stephen Wiggins | A Kolmogorov theorem for nearly-integrable Poisson systems with
asymptotically decaying time-dependent perturbation | 10 pages | Regul. Chaotic Dyn., 20(4):476-485, 2015 | 10.1134/S1560354715040061 | null | math.DS | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The aim of this paper is to prove the Kolmogorov theorem of persistence of
Diophantine flows for nearly-integrable Poisson systems associated to a real
analytic Hamiltonian with aperiodic time dependence, provided that the
perturbation is asymptotically vanishing. The paper is an extension of an
analogous result by the same authors for canonical Hamiltonian systems; the
flexibility of the Lie series method developed by A. Giorgilli et al., is
profitably used in the present generalisation.
| [
{
"version": "v1",
"created": "Mon, 1 Sep 2014 14:17:22 GMT"
}
] | 2015-08-12T00:00:00 | [
[
"Fortunati",
"Alessandro",
""
],
[
"Wiggins",
"Stephen",
""
]
] | |
astro-ph/0606265 | Valery Pipin | V.V.Pipin | The mean electro-motive force, current- and cross-helicity under the
influence of rotation, magnetic field and shear | 27 pages, 8 figures, submitted to GAFD | Geophys.Astrophys.Fluid Dynamics.102:21,2008 | 10.1080/03091920701374772 | null | astro-ph | null | The mean electromotive force (MEMF) in a rotating stratified
magnetohydrodynamical turbulence is studied.Our study rests on the mean-field
magnetohydrodynamics framework and $\tau$ approximation. We compute the effects
of the large-scale magnetic fields (LSMF), global rotation and large-scale
shear flow on the different parts of the MEMF (such as $\alpha$ - effect,
turbulent diffusion, turbulent transport, etc.) in an explicit form. The
influence of the helical magnetic fluctuations which stem from the small-scale
dynamo is taken into account, as well. In the paper, we derive the equation
governing the current helicity evolution. It is shown that the joint effect of
the differential rotation and magnetic fluctuations in the stratified media can
be responsible for the generation, maintenance and redistribution of the
current helicity. The implication of the obtained results to astrophysical
dynamos is considered as well.
| [
{
"version": "v1",
"created": "Mon, 12 Jun 2006 10:19:51 GMT"
},
{
"version": "v2",
"created": "Tue, 13 Jun 2006 10:23:03 GMT"
},
{
"version": "v3",
"created": "Thu, 6 Jul 2006 06:39:26 GMT"
},
{
"version": "v4",
"created": "Sat, 30 Dec 2006 10:26:30 GMT"
},
{
"version": "v5",
"created": "Fri, 5 Jan 2007 09:27:36 GMT"
},
{
"version": "v6",
"created": "Mon, 22 Jan 2007 08:29:24 GMT"
}
] | 2009-02-10T00:00:00 | [
[
"Pipin",
"V. V.",
""
]
] | |
2112.03524 | Zilong Zhang | Suyi Zhao, Zilong Zhang, Yuan Gao, Xin Wang, YuChen Jie, Changming
Zhao | Self-healing and transformation characteristics of obstructed
Hermite-Gaussian modes composed structured beams | null | null | null | null | physics.optics | http://creativecommons.org/licenses/by/4.0/ | The self-healing property of laser beams is of great interest. And a laser
beam with spatial structures is also widely concerned due to its important
applications in lots of areas. We theoretically and experimentally investigate
the self-healing and transformation characteristics of obstructed structured
beams composed by incoherent or coherent superposition of multiple
Hermite-Gaussian (HG) modes. We reveal that partially obstructed single HG mode
can recover itself or transfer to a lower order in the far-field. When the
obstacle retains one pair of edged bright spots of HG mode in each direction of
its two symmetry axes, the beam structure information (number of knot lines)
along each axis can be restored. Otherwise, it will be transferred to the
corresponding low-order HG mode or multi interference fringes in the far-field,
according to the interval of the two most edged remaining spots on each axis.
It's proved that the above effect is induced by the diffraction and
interference results of the partially retained light field. This principle is
also applicable to multi-eigenmodes composed beams with special customized
optical structures. Then the self-healing and transformation characteristics of
the partially obstructed HG modes composed structured beams are investigated.
It's found that the HG modes incoherently composed structured beams have a
strong ability to recover themselves in the far-field after occlusion. These
investigations can expand the applications of optical lattice structures of
laser communication, atom optical capture, and optical imaging.
| [
{
"version": "v1",
"created": "Tue, 7 Dec 2021 06:44:21 GMT"
},
{
"version": "v2",
"created": "Tue, 21 Dec 2021 03:50:58 GMT"
}
] | 2021-12-22T00:00:00 | [
[
"Zhao",
"Suyi",
""
],
[
"Zhang",
"Zilong",
""
],
[
"Gao",
"Yuan",
""
],
[
"Wang",
"Xin",
""
],
[
"Jie",
"YuChen",
""
],
[
"Zhao",
"Changming",
""
]
] | |
2402.14727 | Rafael L\'opez | Rafael L\'opez, Marian Ioan Munteanu | Solitons of the mean curvature flow in $\mathbb{s}^2\times\mathbb{R}$ | 14 pages, 5 figures | null | null | null | math.DG | http://creativecommons.org/licenses/by/4.0/ | A soliton of the mean curvature flow in the product space
$\mathbb{s}^2\times\mathbb{R}$ as a surface whose mean curvature $H$ satisfies
the equation $H=\langle N,X\rangle$, where $N$ is the unit normal of the
surface and $X$ is a Killing vector field. In this paper we consider the vector
field tangent to the fibers and the vector field associated to a rotations
about an axis of $\mathbb{s}^2$, respectively. We give a classification of the
solitons with respect to these vector fields assuming that the surface is
invariant under a one-parameter group of vertical translations or under a group
of rotations of $\mathbb{s}^2$.
| [
{
"version": "v1",
"created": "Thu, 22 Feb 2024 17:34:47 GMT"
}
] | 2024-02-23T00:00:00 | [
[
"López",
"Rafael",
""
],
[
"Munteanu",
"Marian Ioan",
""
]
] | |
2410.08597 | Florence Dupin de Saint-Cyr | Florence Dupin de Saint-Cyr (IRIT-ADRIA), Anne-Gwenn Bosser
(Lab-STICC\_COMMEDIA, ENIB, Lab-STICC), Benjamin Callac
(Lab-STICC\_COMMEDIA), Eric Maisel (Lab-STICC\_COMMEDIA) | What killed the cat? Towards a logical formalization of curiosity (and
suspense, and surprise) in narratives | null | 31st International Symposium on Temporal Representation and
Reasoning (TIME 2024), Oct 2024, Montpellier, France | null | null | cs.AI | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide a unified framework in which the three emotions at the heart of
narrative tension (curiosity, suspense and surprise) are formalized. This
framework is built on nonmonotonic reasoning which allows us to compactly
represent the default behavior of the world and to simulate the affective
evolution of an agent receiving a story. After formalizing the notions of
awareness, curiosity, surprise and suspense, we explore the properties induced
by our definitions and study the computational complexity of detecting them. We
finally propose means to evaluate these emotions' intensity for a given agent
listening to a story.
| [
{
"version": "v1",
"created": "Fri, 11 Oct 2024 07:50:55 GMT"
}
] | 2024-10-14T00:00:00 | [
[
"de Saint-Cyr",
"Florence Dupin",
"",
"IRIT-ADRIA"
],
[
"Bosser",
"Anne-Gwenn",
"",
"Lab-STICC\\_COMMEDIA, ENIB, Lab-STICC"
],
[
"Callac",
"Benjamin",
"",
"Lab-STICC\\_COMMEDIA"
],
[
"Maisel",
"Eric",
"",
"Lab-STICC\\_COMMEDIA"
]
] | |
cond-mat/0308325 | Gordon Baym | Gordon Baym and C.J. Pethick | Vortex core structure and global properties of rapidly rotating
Bose-Einstein condensates | 11 pages in LateX, 3 figures | Phys.Rev.A69:043619,2004 | 10.1103/PhysRevA.69.043619 | null | cond-mat.soft cond-mat.mes-hall | null | We develop an approach for calculating stationary states of rotating
Bose-Einstein condensates in harmonic traps which is applicable for arbitrary
ratios of the rotation frequency to the transverse frequency of the trap
$\omega_{\perp}$. Assuming the number of vortices to be large, we write the
condensate wave function as the product of a function that describes the
structure of individual vortices times an envelope function, varying slowly on
the scale of the vortex spacing. By minimizing the energy, we derive
Gross-Pitaevskii equations that determine the properties of individual vortices
and the global structure of the cloud. For low rotation rates, the structure of
a vortex is that of an isolated vortex in a uniform medium, while for rotation
rates approaching the frequency of the trap (the mean field quantum Hall
regime), the structure is that of the lowest p-wave state of a particle in a
harmonic trap with frequency $\omega_{\perp}$. The global structure of the
cloud is determined by minimizing the energy with respect to variations of the
envelope function; for conditions appropriate to most experimental
investigations to date, we predict that the transverse density profile of the
cloud will be of the Thomas-Fermi form, rather than the Gaussian structure
predicted on the assumption that the wave function consists only of components
in the lowest Landau level.
| [
{
"version": "v1",
"created": "Sat, 16 Aug 2003 05:07:09 GMT"
}
] | 2009-02-05T00:00:00 | [
[
"Baym",
"Gordon",
""
],
[
"Pethick",
"C. J.",
""
]
] | |
2010.12279 | Anna Nelles | J. A. Aguilar, P. Allison, J. J. Beatty, H. Bernhoff, D. Besson, N.
Bingefors, O. Botner, S. Buitink, K. Carter, B. A. Clark, A. Connolly, P.
Dasgupta, S. de Kockere, K. D. de Vries, C. Deaconu, M. A. DuVernois, N.
Feigl, D. Garcia-Fernandez, C. Glaser, A. Hallgren, S. Hallmann, J. C.
Hanson, B. Hendricks, B. Hokanson-Fasig, C. Hornhuber, K. Hughes, A. Karle,
J. L. Kelley, S. R. Klein, R. Krebs, R. Lahmann, M. Magnuson, T. Meures, Z.
S. Meyers, A. Nelles, A. Novikov, E. Oberla, B. Oeyen, H. Pandya, I.
Plaisier, L. Pyras, D. Ryckbosch, O. Scholten, D. Seckel, D. Smith, D.
Southall, J. Torres, S. Toscano, D. J. Van Den Broeck, N. van Eijndhoven, A.
G. Vieregg, C. Welling, S. Wissel, R. Young, A. Zink | Design and Sensitivity of the Radio Neutrino Observatory in Greenland
(RNO-G) | 51 pages, 27 figures, version updated to include corrected figure of
effective areas and error in caption | JINST 16 P03025 2021 | 10.1088/1748-0221/16/03/P03025 | null | astro-ph.IM astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article presents the design of the Radio Neutrino Observatory Greenland
(RNO-G) and discusses its scientific prospects. Using an array of radio
sensors, RNO-G seeks to measure neutrinos above 10 PeV by exploiting the
Askaryan effect in neutrino-induced cascades in ice. We discuss the
experimental considerations that drive the design of RNO-G, present first
measurements of the hardware that is to be deployed and discuss the projected
sensitivity of the instrument. RNO-G will be the first production-scale radio
detector for in-ice neutrino signals.
| [
{
"version": "v1",
"created": "Fri, 23 Oct 2020 10:20:06 GMT"
},
{
"version": "v2",
"created": "Mon, 26 Oct 2020 14:20:22 GMT"
},
{
"version": "v3",
"created": "Sat, 26 Dec 2020 14:21:55 GMT"
},
{
"version": "v4",
"created": "Tue, 31 Jan 2023 10:36:57 GMT"
},
{
"version": "v5",
"created": "Tue, 30 Jul 2024 07:57:51 GMT"
}
] | 2024-07-31T00:00:00 | [
[
"Aguilar",
"J. A.",
""
],
[
"Allison",
"P.",
""
],
[
"Beatty",
"J. J.",
""
],
[
"Bernhoff",
"H.",
""
],
[
"Besson",
"D.",
""
],
[
"Bingefors",
"N.",
""
],
[
"Botner",
"O.",
""
],
[
"Buitink",
"S.",
""
],
[
"Carter",
"K.",
""
],
[
"Clark",
"B. A.",
""
],
[
"Connolly",
"A.",
""
],
[
"Dasgupta",
"P.",
""
],
[
"de Kockere",
"S.",
""
],
[
"de Vries",
"K. D.",
""
],
[
"Deaconu",
"C.",
""
],
[
"DuVernois",
"M. A.",
""
],
[
"Feigl",
"N.",
""
],
[
"Garcia-Fernandez",
"D.",
""
],
[
"Glaser",
"C.",
""
],
[
"Hallgren",
"A.",
""
],
[
"Hallmann",
"S.",
""
],
[
"Hanson",
"J. C.",
""
],
[
"Hendricks",
"B.",
""
],
[
"Hokanson-Fasig",
"B.",
""
],
[
"Hornhuber",
"C.",
""
],
[
"Hughes",
"K.",
""
],
[
"Karle",
"A.",
""
],
[
"Kelley",
"J. L.",
""
],
[
"Klein",
"S. R.",
""
],
[
"Krebs",
"R.",
""
],
[
"Lahmann",
"R.",
""
],
[
"Magnuson",
"M.",
""
],
[
"Meures",
"T.",
""
],
[
"Meyers",
"Z. S.",
""
],
[
"Nelles",
"A.",
""
],
[
"Novikov",
"A.",
""
],
[
"Oberla",
"E.",
""
],
[
"Oeyen",
"B.",
""
],
[
"Pandya",
"H.",
""
],
[
"Plaisier",
"I.",
""
],
[
"Pyras",
"L.",
""
],
[
"Ryckbosch",
"D.",
""
],
[
"Scholten",
"O.",
""
],
[
"Seckel",
"D.",
""
],
[
"Smith",
"D.",
""
],
[
"Southall",
"D.",
""
],
[
"Torres",
"J.",
""
],
[
"Toscano",
"S.",
""
],
[
"Broeck",
"D. J. Van Den",
""
],
[
"van Eijndhoven",
"N.",
""
],
[
"Vieregg",
"A. G.",
""
],
[
"Welling",
"C.",
""
],
[
"Wissel",
"S.",
""
],
[
"Young",
"R.",
""
],
[
"Zink",
"A.",
""
]
] | |
1911.05321 | Ajay Mandlekar | Ajay Mandlekar, Fabio Ramos, Byron Boots, Silvio Savarese, Li Fei-Fei,
Animesh Garg, Dieter Fox | IRIS: Implicit Reinforcement without Interaction at Scale for Learning
Control from Offline Robot Manipulation Data | null | null | null | null | cs.RO cs.AI cs.LG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Learning from offline task demonstrations is a problem of great interest in
robotics. For simple short-horizon manipulation tasks with modest variation in
task instances, offline learning from a small set of demonstrations can produce
controllers that successfully solve the task. However, leveraging a fixed batch
of data can be problematic for larger datasets and longer-horizon tasks with
greater variations. The data can exhibit substantial diversity and consist of
suboptimal solution approaches. In this paper, we propose Implicit
Reinforcement without Interaction at Scale (IRIS), a novel framework for
learning from large-scale demonstration datasets. IRIS factorizes the control
problem into a goal-conditioned low-level controller that imitates short
demonstration sequences and a high-level goal selection mechanism that sets
goals for the low-level and selectively combines parts of suboptimal solutions
leading to more successful task completions. We evaluate IRIS across three
datasets, including the RoboTurk Cans dataset collected by humans via
crowdsourcing, and show that performant policies can be learned from purely
offline learning. Additional results at
https://sites.google.com/stanford.edu/iris/ .
| [
{
"version": "v1",
"created": "Wed, 13 Nov 2019 06:56:21 GMT"
},
{
"version": "v2",
"created": "Sun, 23 Feb 2020 02:33:41 GMT"
}
] | 2020-02-25T00:00:00 | [
[
"Mandlekar",
"Ajay",
""
],
[
"Ramos",
"Fabio",
""
],
[
"Boots",
"Byron",
""
],
[
"Savarese",
"Silvio",
""
],
[
"Fei-Fei",
"Li",
""
],
[
"Garg",
"Animesh",
""
],
[
"Fox",
"Dieter",
""
]
] | |
1902.07900 | Shashi Bhushan Pandey | S. B. Pandey, Y. Hu, A. J. Castro-Tirado, A. S. Pozanenko, R.
S\'anchez-Ram\'irez, J. Gorosabel, 5 S. Guziy, M. Jelinek, J. C. Tello, S.
Jeong, S. R. Oates, B. -B. Zhang, E. D. Mazaeva, A. A. Volnova, P. Yu.
Minaev, H. J. van Eerten, M. D. Caballero-Garc\'ia, D. P\'erez-Ram\'irez, M.
Bremer, J.-M. Winters, I. H. Park, A. Nicuesa Guelbenzu, S. Klose, A.
Moskvitin, V. V. Sokolov, E. Sonbas, A. Ayala, J. Cepa, N. Butler, E. Troja,
A. M. Chernenko, S. V. Molkov, A. E. Volvach, R. Ya. Inasaridze, Sh. A.
Egamberdiyev, O. Burkhonov, I. V. Reva, K. A. Polyakov, A. A. Matkin, A. L.
Ivanov, I. Molotov, T. Guver, A. M. Watson, A. Kutyrev, W. H. Lee, O. Fox, O.
Littlejohns, A. Cucchiara, J. Gonzalez, M. G. Richer, C. G.
Rom\'an-Z\'u\~niga, N. R. Tanvir, J. S. Bloom, J. X. Prochaska, N. Gehrels,
H. Moseley, J. A. de Diego, E. Ram\'irez-Ruiz, E. V. Klunko, Y. Fan, X. Zhao,
J. Bai, Ch. Wang, Y. Xin, Ch. Cui, N. Tungalag, Z.-K. Peng, Amit Kumar, Rahul
Gupta, Amar Aryan, Brajesh Kumar, L. N. Volvach, G. P. Lamb, A. F. Valeev | A multi-wavelength analysis of a collection of short-duration GRBs
observed between 2012-2015 | 24 pages, 22 figures, Accepted to MNRAS, 2019 February 19. Received
2019 February 19; in original form 2018 August 30 | null | 10.1093/mnras/stz530 | null | astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the prompt emission and the afterglow properties of short
duration gamma-ray burst (sGRB) 130603B and another eight sGRB events during
2012-2015, observed by several multi-wavelength facilities including the GTC
10.4m telescope. Prompt emission high energy data of the events were obtained
by INTEGRAL/SPI/ACS, Swift/BAT and Fermi/GBM satellites. The prompt emission
data by INTEGRAL in the energy range of 0.1-10 MeV for sGRB 130603B, sGRB
140606A, sGRB 140930B, sGRB 141212A and sGRB 151228A do not show any signature
of the extended emission or precursor activity and their spectral and temporal
properties are similar to those seen in case of other short bursts. For
sGRB130603B, our new afterglow photometric data constraints the pre jet-break
temporal decay due to denser temporal coverage. For sGRB 130603B, the afterglow
light curve, containing both our new as well as previously published
photometric data is broadly consistent with the ISM afterglow model. Modeling
of the host galaxies of sGRB 130603B and sGRB 141212A using the LePHARE
software supports a scenario in which the environment of the burst is
undergoing moderate star formation activity. From the inclusion of our
late-time data for 8 other sGRBs we are able to; place tight constraints on the
non-detection of the afterglow, host galaxy or any underlying kilonova
emission. Our late-time afterglow observations of the sGRB 170817A/GW170817 are
also discussed and compared with the sub-set of sGRBs.
| [
{
"version": "v1",
"created": "Thu, 21 Feb 2019 07:49:25 GMT"
}
] | 2019-03-06T00:00:00 | [
[
"Pandey",
"S. B.",
""
],
[
"Hu",
"Y.",
""
],
[
"Castro-Tirado",
"A. J.",
""
],
[
"Pozanenko",
"A. S.",
""
],
[
"Sánchez-Ramírez",
"R.",
""
],
[
"Gorosabel",
"J.",
""
],
[
"Guziy",
"5 S.",
""
],
[
"Jelinek",
"M.",
""
],
[
"Tello",
"J. C.",
""
],
[
"Jeong",
"S.",
""
],
[
"Oates",
"S. R.",
""
],
[
"Zhang",
"B. -B.",
""
],
[
"Mazaeva",
"E. D.",
""
],
[
"Volnova",
"A. A.",
""
],
[
"Minaev",
"P. Yu.",
""
],
[
"van Eerten",
"H. J.",
""
],
[
"Caballero-García",
"M. D.",
""
],
[
"Pérez-Ramírez",
"D.",
""
],
[
"Bremer",
"M.",
""
],
[
"Winters",
"J. -M.",
""
],
[
"Park",
"I. H.",
""
],
[
"Guelbenzu",
"A. Nicuesa",
""
],
[
"Klose",
"S.",
""
],
[
"Moskvitin",
"A.",
""
],
[
"Sokolov",
"V. V.",
""
],
[
"Sonbas",
"E.",
""
],
[
"Ayala",
"A.",
""
],
[
"Cepa",
"J.",
""
],
[
"Butler",
"N.",
""
],
[
"Troja",
"E.",
""
],
[
"Chernenko",
"A. M.",
""
],
[
"Molkov",
"S. V.",
""
],
[
"Volvach",
"A. E.",
""
],
[
"Inasaridze",
"R. Ya.",
""
],
[
"Egamberdiyev",
"Sh. A.",
""
],
[
"Burkhonov",
"O.",
""
],
[
"Reva",
"I. V.",
""
],
[
"Polyakov",
"K. A.",
""
],
[
"Matkin",
"A. A.",
""
],
[
"Ivanov",
"A. L.",
""
],
[
"Molotov",
"I.",
""
],
[
"Guver",
"T.",
""
],
[
"Watson",
"A. M.",
""
],
[
"Kutyrev",
"A.",
""
],
[
"Lee",
"W. H.",
""
],
[
"Fox",
"O.",
""
],
[
"Littlejohns",
"O.",
""
],
[
"Cucchiara",
"A.",
""
],
[
"Gonzalez",
"J.",
""
],
[
"Richer",
"M. G.",
""
],
[
"Román-Zúñiga",
"C. G.",
""
],
[
"Tanvir",
"N. R.",
""
],
[
"Bloom",
"J. S.",
""
],
[
"Prochaska",
"J. X.",
""
],
[
"Gehrels",
"N.",
""
],
[
"Moseley",
"H.",
""
],
[
"de Diego",
"J. A.",
""
],
[
"Ramírez-Ruiz",
"E.",
""
],
[
"Klunko",
"E. V.",
""
],
[
"Fan",
"Y.",
""
],
[
"Zhao",
"X.",
""
],
[
"Bai",
"J.",
""
],
[
"Wang",
"Ch.",
""
],
[
"Xin",
"Y.",
""
],
[
"Cui",
"Ch.",
""
],
[
"Tungalag",
"N.",
""
],
[
"Peng",
"Z. -K.",
""
],
[
"Kumar",
"Amit",
""
],
[
"Gupta",
"Rahul",
""
],
[
"Aryan",
"Amar",
""
],
[
"Kumar",
"Brajesh",
""
],
[
"Volvach",
"L. N.",
""
],
[
"Lamb",
"G. P.",
""
],
[
"Valeev",
"A. F.",
""
]
] | |
1311.7165 | Huyuan Chen | Huyuan Chen and Hichem Hajaiej | Sharp embedding of Sobolev spaces involving general kernels and its
application | 20 pages | null | null | null | math.AP | http://creativecommons.org/licenses/by/3.0/ | The purpose of this paper is to extend the embedding theorem of Sobolev
spaces involving general kernels and we provide a sharp critical exponent in
these embeddings. As an application, solutions for equations driven by a
general integro-differential operator, with homogeneous Dirichlet boundary
conditions, is established by using the Mountain Pass Theorem.
| [
{
"version": "v1",
"created": "Wed, 27 Nov 2013 21:46:50 GMT"
},
{
"version": "v2",
"created": "Fri, 4 Apr 2014 17:51:14 GMT"
}
] | 2014-04-07T00:00:00 | [
[
"Chen",
"Huyuan",
""
],
[
"Hajaiej",
"Hichem",
""
]
] | |
cond-mat/9812302 | Peter Schwab | R. Raimondi and P. Schwab | Andreev Tunneling in Strongly Interacting Quantum Dots | 8 pages, 4 figures; submitted to Superlattices and Microstructures | Superlattices and Microstructures 25, 1141 (1999) | 10.1006/spmi.1999.0723 | null | cond-mat.mes-hall | null | We review recent work on resonant Andreev tunneling through a strongly
interacting quantum dot connected to a normal and to a superconducting lead. We
derive a general expression for the current flowing in the structure and
discuss the linear and non-linear transport in the nonperturbative regime. New
effects associated to the Kondo resonance combined with the two-particle
tunneling arise. The Kondo anomaly in the $I-V$ characteristics depends on the
relative size of the gap energy and the Kondo temperature.
| [
{
"version": "v1",
"created": "Thu, 17 Dec 1998 13:59:00 GMT"
},
{
"version": "v2",
"created": "Tue, 20 Apr 1999 10:18:41 GMT"
}
] | 2009-10-31T00:00:00 | [
[
"Raimondi",
"R.",
""
],
[
"Schwab",
"P.",
""
]
] | |
1902.09999 | Attila Andr\'as V\'ig | Zsolt Bihary and Attila Andr\'as V\'ig | Analytic solutions in a continuous-time financial market model | Journal of Economic Literature (JEL) code: G11, G17 | null | null | null | econ.GN q-fin.EC q-fin.TR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a heterogeneous agent market model (HAM) in continuous time. The
market is populated by fundamental traders and chartists, who both use simple
linear trading rules. Most of the related literature explores stability, price
dynamics and profitability either within deterministic models or by simulation.
Our novel formulation lends itself to analytic treatment even in the stochastic
case. We prove conditions for the (stochastic) stability of the price process,
and also for the price to mean-revert to the fundamental value. Assuming
stability, we derive analytic formulae on how the population ratios influence
price dynamics and the profitability of the strategies. Our results suggest
that whichever trader type is more present in the market will achieve higher
returns.
| [
{
"version": "v1",
"created": "Tue, 26 Feb 2019 15:26:29 GMT"
}
] | 2019-02-27T00:00:00 | [
[
"Bihary",
"Zsolt",
""
],
[
"Víg",
"Attila András",
""
]
] | |
hep-th/9906034 | Manuel Reenders | Manuel Reenders | Dynamical symmetry breaking in the gauged Nambu-Jona-Lasinio model | Ph.D. Thesis, University of Groningen, 199 pages, figures included,
LaTeX (BibTeX) | null | null | null | hep-th hep-ph | null | The mechanism of dynamical chiral symmetry breaking is studied in the Abelian
version of the gauged Nambu-Jona-Lasinio model in four dimensions. The most
interesting feature of the gauged Nambu-Jona-Lasinio model is the appearance of
relevant (renormalizable) four-fermion interactions near a critical curve
separating a chiral symmetric and a dynamically chiral symmetry broken phase.
The first three chapters of the thesis are introductory. Chapter 4 is based on
hep-th/9712123. In an attempt to go beyond standard mean field approximations
for four-fermion interactions, the 1/N expansion is utilized in chapter 5.
Within the 1/N expansion, where N is the number of fermion flavors, it is shown
that the renormalization group beta function of the U(1) gauge coupling has
ultra-violet stable fixed points for sufficiently large N. This implies that
the gauged Nambu-Jona-Lasinio model is a rare example of a nontrivial
nonasymptotically free gauge field theory in four dimensions.
| [
{
"version": "v1",
"created": "Fri, 4 Jun 1999 13:10:20 GMT"
}
] | 2007-05-23T00:00:00 | [
[
"Reenders",
"Manuel",
""
]
] | |
0801.0068 | Jean-Philippe Uzan | Jean-Philippe Uzan, Chris Clarkson, and George F.R. Ellis | Time drift of cosmological redshifts as a test of the Copernican
principle | 4 pages. Version matching the published text in PRL | Phys.Rev.Lett.100:191303,2008 | 10.1103/PhysRevLett.100.191303 | null | astro-ph gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the time drift of the cosmological redshift in a general
spherically symmetric spacetime. We demonstrate that its observation would
allow us to test the Copernican principle and so determine if our universe is
radially inhomogeneous, an important issue in our understanding of dark energy.
In particular, when combined with distance data, this extra observable allows
one to fully reconstruct the geometry of a spacetime describing a spherically
symmetric under-dense region around us, purely from background observations.
| [
{
"version": "v1",
"created": "Sat, 29 Dec 2007 14:36:16 GMT"
},
{
"version": "v2",
"created": "Wed, 23 Jul 2008 16:20:50 GMT"
}
] | 2009-06-23T00:00:00 | [
[
"Uzan",
"Jean-Philippe",
""
],
[
"Clarkson",
"Chris",
""
],
[
"Ellis",
"George F. R.",
""
]
] | |
2410.18078 | Monica Rodriguez | M. I. Rodr\'iguez, U. Lisenfeld, S. Duarte Puertas, D. Espada, J.
Dom\'inguez-G\'omez, M. S\'anchez-Portal, A. Bongiovanni, M.
Alc\'azar-Laynez, M. Argudo-Fern\'andez, B. Bidaran, S. B. De Daniloff, J.
Falc\'on-Barroso, E. Florido, R. Garc\'ia-Benito, A. Jimenez, K. Kreckel, R.
F. Peletier, I. P\'erez, T. Ruiz-Lara, L. S\'anchez-Menguiano, G.
Torres-R\'ios, P. Villalba-Gonz\'alez, S. Verley, A. Zurita | CO-CAVITY project: Molecular gas and star formation in void galaxies | 26 pages, 9 figures. Accepted for publication in A&A | A&A 692, A125 (2024) | 10.1051/0004-6361/202451482 | null | astro-ph.GA | http://creativecommons.org/licenses/by/4.0/ | Cosmic voids, distinguished by their low-density environment, provide a
unique opportunity to explore the interplay between the cosmic environment and
the processes of galaxy formation and evolution. Data on the molecular gas has
been scarce so far. In this paper, we continue previous research done in the
CO-CAVITY pilot project to study the molecular gas content and properties in
void galaxies to search for possible differences compared to galaxies that
inhabit denser structures. We observed at the IRAM 30 m telescope the CO(1-0)
and CO(2-1) emission of 106 void galaxies selected from the CAVITY survey.
Together with data from the literature, we obtained a sample of 200 void
galaxies with CO data. We conducted a comprehensive comparison of the specific
star formation rate (sSFR = SFR/M$_*$), the molecular gas fraction
(MH$_2$/M$_*$), and the star formation efficiency (SFE = SFR/MH$_2$) between
the void galaxies and a comparison sample of galaxies in filaments and walls,
selected from the xCOLD GASS survey. We found no statistically significant
difference between void galaxies and the comparison sample in the molecular gas
fraction as a function of stellar mass for galaxies on the star-forming main
sequence (SFMS). However, for void galaxies, the SFE was found to be constant
across all stellar mass bins, while there is a decreasing trend with M$_*$ for
the comparison sample. Finally, we found some indications for a smaller
dynamical range in the molecular gas fraction as a function of distance to the
SFMS in void galaxies. Overall, our analysis finds that the molecular gas
properties of void galaxies are not very different from denser environments.
The physical origin of the most significant difference that we found - a
constant SFE as a function of stellar mass in void galaxies - is unclear and
requires further investigation and higher-resolution data.
| [
{
"version": "v1",
"created": "Wed, 23 Oct 2024 17:59:03 GMT"
}
] | 2024-12-11T00:00:00 | [
[
"Rodríguez",
"M. I.",
""
],
[
"Lisenfeld",
"U.",
""
],
[
"Puertas",
"S. Duarte",
""
],
[
"Espada",
"D.",
""
],
[
"Domínguez-Gómez",
"J.",
""
],
[
"Sánchez-Portal",
"M.",
""
],
[
"Bongiovanni",
"A.",
""
],
[
"Alcázar-Laynez",
"M.",
""
],
[
"Argudo-Fernández",
"M.",
""
],
[
"Bidaran",
"B.",
""
],
[
"De Daniloff",
"S. B.",
""
],
[
"Falcón-Barroso",
"J.",
""
],
[
"Florido",
"E.",
""
],
[
"García-Benito",
"R.",
""
],
[
"Jimenez",
"A.",
""
],
[
"Kreckel",
"K.",
""
],
[
"Peletier",
"R. F.",
""
],
[
"Pérez",
"I.",
""
],
[
"Ruiz-Lara",
"T.",
""
],
[
"Sánchez-Menguiano",
"L.",
""
],
[
"Torres-Ríos",
"G.",
""
],
[
"Villalba-González",
"P.",
""
],
[
"Verley",
"S.",
""
],
[
"Zurita",
"A.",
""
]
] | |
2203.12055 | Niankai Yang | Niankai Yang, Chao Shen, Matthew Johnson-Roberson, and Jing Sun | Energy-optimal Three-dimensional Path-following Control of Autonomous
Underwater Vehicles under Ocean Currents | 8 pages, 7 figures | null | 10.1109/CCTA49430.2022.9966180 | null | eess.SY cs.SY | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper presents a three-dimensional (3D) energy-optimal path-following
control design for autonomous underwater vehicles subject to ocean currents.
The proposed approach has a two-stage control architecture consisting of the
setpoint computation and the setpoint tracking. In the first stage, the surge
velocity, heave velocity, and pitch angle setpoints are optimized by minimizing
the required vehicle propulsion energy under currents, and the line-of-sight
(LOS) guidance law is used to generate the yaw angle setpoint that ensures path
following. In the second stage, two model predictive controllers are designed
to control the vehicle motion in the horizontal and vertical planes by tracking
the optimal setpoints. The proposed controller is compared with a conventional
LOS-based control that maintains zero heave velocity relative to the current
(i.e., relative heave velocity) and derives pitch angle setpoint using LOS
guidance to reach the desired depth. Through simulations, we show that the
proposed approach can achieve more than 13% energy saving on a lawnmower-type
and an inspection mission under different ocean current conditions. The
simulation results demonstrate that allowing motions with non-zero relative
heave velocity improves energy efficiency in 3D path-following applications.
| [
{
"version": "v1",
"created": "Tue, 22 Mar 2022 21:29:31 GMT"
},
{
"version": "v2",
"created": "Mon, 2 Jan 2023 07:03:16 GMT"
}
] | 2023-01-16T00:00:00 | [
[
"Yang",
"Niankai",
""
],
[
"Shen",
"Chao",
""
],
[
"Johnson-Roberson",
"Matthew",
""
],
[
"Sun",
"Jing",
""
]
] | |
1110.6791 | Victor Rivelles | Victor O. Rivelles | Pulsating Strings in Deformed Backgrounds | 8 pages. Talk presented at Quantum Theory and Symmetries 7, Prague,
August 7-13, 2011 | null | 10.1088/1742-6596/343/1/012104 | null | hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is a brief summary on pulsating strings in beta deformed backgrounds
found recently.
| [
{
"version": "v1",
"created": "Mon, 31 Oct 2011 13:40:03 GMT"
}
] | 2015-06-03T00:00:00 | [
[
"Rivelles",
"Victor O.",
""
]
] | |
2501.08613 | Ramya Keerthy Thatikonda | Ramya Keerthy Thatikonda, Wray Buntine, Ehsan Shareghi | Assessing the Alignment of FOL Closeness Metrics with Human Judgement | Code: https://github.com/RamyaKeerthy/AlignmentFOL | null | null | null | cs.CL | http://creativecommons.org/licenses/by/4.0/ | The recent successful paradigm of solving logical reasoning problems with
tool-augmented large language models (LLMs) leverages translation of natural
language statements into First-Order Logic~(FOL) and external theorem provers.
However, the correctness of FOL statements, comprising operators and text
predicates, often goes unverified due to the lack of a reliable evaluation
metric for comparing generated and ground-truth FOLs. In this paper, we present
a comprehensive study of sensitivity of existing metrics and their alignment
with human judgement on FOL evaluation. Using ground-truth FOLs, we carefully
designed various perturbations on the ground-truth to assess metric
sensitivity. We sample FOL translation candidates for natural language
statements and measure the ranking alignment between automatic metrics and
human annotators. Our empirical findings highlight oversensitivity in the
n-gram metric BLEU for text perturbations, the semantic graph metric Smatch++
for structural perturbations, and FOL metric for operator perturbation. We also
observe a closer alignment between BertScore and human judgement. Additionally,
we show that combining metrics enhances both alignment and sensitivity compared
to using individual metrics.
| [
{
"version": "v1",
"created": "Wed, 15 Jan 2025 06:22:35 GMT"
},
{
"version": "v2",
"created": "Tue, 21 Jan 2025 02:02:39 GMT"
}
] | 2025-01-22T00:00:00 | [
[
"Thatikonda",
"Ramya Keerthy",
""
],
[
"Buntine",
"Wray",
""
],
[
"Shareghi",
"Ehsan",
""
]
] | |
1706.08286 | Anurag Anshu | Anurag Anshu and Rahul Jain and Naqueeb Ahmad Warsi | A hypothesis testing approach for communication over entanglement
assisted compound quantum channel | 21 pages, version 3. Added an application to the composite quantum
hypothesis testing. Expanded introduction | IEEE Transactions on Information Theory ( Volume: 65 , Issue: 4 ,
April 2019 ) | 10.1109/TIT.2018.2876280 | null | quant-ph cs.IT math.IT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the problem of communication over a compound quantum channel in the
presence of entanglement. Classically such channels are modeled as a collection
of conditional probability distributions wherein neither the sender nor the
receiver is aware of the channel being used for transmission, except for the
fact that it belongs to this collection. We provide near optimal achievability
and converse bounds for this problem in the one-shot quantum setting in terms
of quantum hypothesis testing divergence. We also consider the case of informed
sender, showing a one-shot achievability result that converges appropriately in
the asymptotic and i.i.d. setting. Our achievability proof is similar in spirit
to its classical counterpart. To arrive at our result, we use the technique of
position-based decoding along with a new approach for constructing a union of
two projectors, which can be of independent interest. We give another
application of the union of projectors to the problem of testing composite
quantum hypotheses.
| [
{
"version": "v1",
"created": "Mon, 26 Jun 2017 08:52:21 GMT"
},
{
"version": "v2",
"created": "Thu, 3 Aug 2017 08:36:39 GMT"
},
{
"version": "v3",
"created": "Mon, 2 Apr 2018 15:02:49 GMT"
}
] | 2019-03-19T00:00:00 | [
[
"Anshu",
"Anurag",
""
],
[
"Jain",
"Rahul",
""
],
[
"Warsi",
"Naqueeb Ahmad",
""
]
] | |
1207.4699 | Sandro Wimberger | Carlos A. Parra-Murillo, Javier Madro\~nero, Sandro Wimberger | A two-band Bose-Hubbard model for many-body resonant tunneling in the
Wannier-Stark system | much extended and improved version (13 pages, 10 figures); comments
are very welcome! | Phys. Rev. A 88, 032119 (2013) | 10.1103/PhysRevA.88.032119 | null | cond-mat.quant-gas nlin.CD quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study an experimentally realizable paradigm of complex many-body quantum
systems, a two-band Wannier-Stark model, for which diffusion in Hilbert space
as well as many-body Landau-Zener processes can be engineered. A cross-over
between regular to quantum chaotic spectra is found within the many-body
avoided crossings at resonant tunneling conditions. The spectral properties are
shown to determine the evolution of states across a cascade of Landau-Zener
events. We apply the obtained spectral information to study the non-equilibrium
dynamics of our many-body system in different parameter regimes.
| [
{
"version": "v1",
"created": "Thu, 19 Jul 2012 15:03:30 GMT"
},
{
"version": "v2",
"created": "Tue, 11 Jun 2013 13:17:01 GMT"
}
] | 2013-10-23T00:00:00 | [
[
"Parra-Murillo",
"Carlos A.",
""
],
[
"Madroñero",
"Javier",
""
],
[
"Wimberger",
"Sandro",
""
]
] | |
1710.00216 | Andrey Ardentov | A.A. Ardentov, Yu.L. Sachkov | Maxwell Strata and Cut Locus in Sub-Riemannian Problem on Engel group | 43 pages, 8 figures | null | 10.1134/S1560354717080020 | null | math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the nilpotent left-invariant sub-Riemannian structure on the
Engel group. This structure gives a fundamental local approximation of a
generic rank 2 sub-Riemannian structure on a 4-manifold near a generic point
(in particular, of the kinematic models of a car with a trailer). On the other
hand, this is the simplest sub-Riemannian structure of step three. We describe
the global structure of the cut locus (the set of points where geodesics lose
their global optimality), the Maxwell set (the set of points that admit more
than one minimizer), and the intersection of the cut locus with the caustic
(the set of conjugate points along all geodesics). The group of symmetries of
the cut locus is described: it is generated by a one-parameter group of
dilations $\mathbb{R}_+$ and a discrete group of reflections $\mathbb{Z}_2
\times \mathbb{Z}_2 \times \mathbb{Z}_2$. The cut locus admits a stratification
with 6 three-dimensional strata, 12 two-dimensional strata, and 2
one-dimensional strata. Three-dimen-sional strata of the cut locus are Maxwell
strata of multiplicity 2 (for each point there are 2 minimizers).
Two-dimensional strata of the cut locus consist of conjugate points. Finally,
one-dimensional strata are Maxwell strata of infinite multiplicity, they
consist of conjugate points as well. Projections of sub-Riemannian geodesics to
the 2-dimensional plane of the distribution are Euler elasticae. For each point
of the cut locus, we describe the Euler elasticae corresponding to minimizers
coming to this point. Finally, we describe the structure of the optimal
synthesis, i.e., the set of minimizers for each terminal point in the Engel
group.
| [
{
"version": "v1",
"created": "Sat, 30 Sep 2017 15:51:32 GMT"
}
] | 2018-03-14T00:00:00 | [
[
"Ardentov",
"A. A.",
""
],
[
"Sachkov",
"Yu. L.",
""
]
] | |
2209.11898 | Ollie Thakar | Ollie Thakar | Combinatorial Proofs of Properties of Double-Point Enhanced Grid
Homology | 35 pages, 6 figures | null | null | null | math.GT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide a purely combinatorial proof of a skein exact sequence obeyed by
double-point enhanced grid homology. We also extend the theory to coefficients
over $\mathbb{Z},$ and discuss alternatives to the Ozsv\'ath-Szab\'o $\tau$
invariant.
| [
{
"version": "v1",
"created": "Sat, 24 Sep 2022 01:14:51 GMT"
}
] | 2022-09-27T00:00:00 | [
[
"Thakar",
"Ollie",
""
]
] | |
2401.12641 | Arno Pauly | Arno Pauly and Giovanni Sold\`a | Sequential discontinuity and first-order problems | null | null | null | null | math.LO cs.LO math.GN | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the low levels of the structure of the continuous Weihrauch
degrees of first-order problems. In particular, we show that there exists a
minimal discontinuous first-order degree, namely that of $\accn$, without any
determinacy assumptions. The same degree is also revealed as the least
sequentially discontinuous one, i.e. the least degree with a representative
whose restriction to some sequence converging to a limit point is still
discontinuous.
The study of games related to continuous Weihrauch reducibility constitutes
an important ingredient in the proof of the main theorem. We present some
initial additional results about the degrees of first-order problems that can
be obtained using this approach.
| [
{
"version": "v1",
"created": "Tue, 23 Jan 2024 10:50:31 GMT"
}
] | 2024-01-24T00:00:00 | [
[
"Pauly",
"Arno",
""
],
[
"Soldà",
"Giovanni",
""
]
] | |
2012.04899 | Andrea Perali | N. Pinto, C. Di Nicola, A. Trapananti, M. Minicucci, A. Di Cicco, A.
Marcelli, A. Bianconi, F. Marchetti, C. Pettinari, A. Perali | Potassium-Doped Para-Terphenyl: Structure, Electrical Transport
Properties and Possible Signatures of a Superconducting Transition | 9 pages, 6 figures | Condensed Matter 5, 78 (2020) | 10.3390/condmat5040078 | null | cond-mat.supr-con cond-mat.mtrl-sci cond-mat.other | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Preliminary evidence for the occurrence of high-Tc superconductivity in
alkali-doped organic materials, such as potassium-doped p-terphenyl (KPT), were
recently obtained by magnetic susceptibility measurements and by the opening of
a large superconducting gap as measured by ARPES and STM techniques. In this
work, KPT samples have been synthesized by a chemical method and characterized
by low-temperature Raman scattering and resistivity measurements. Here, we
report the occurrence of a resistivity drop of more than 4 orders of magnitude
at low temperatures in KPT samples in the form of compressed powder. This fact
was interpreted as a possible sign of a broad superconducting transition taking
place below 90 K in granular KPT. The granular nature of the KPT system appears
to be also related to the 20 K broadening of the resistivity drop around the
critical temperature.
| [
{
"version": "v1",
"created": "Wed, 9 Dec 2020 07:54:34 GMT"
}
] | 2020-12-10T00:00:00 | [
[
"Pinto",
"N.",
""
],
[
"Di Nicola",
"C.",
""
],
[
"Trapananti",
"A.",
""
],
[
"Minicucci",
"M.",
""
],
[
"Di Cicco",
"A.",
""
],
[
"Marcelli",
"A.",
""
],
[
"Bianconi",
"A.",
""
],
[
"Marchetti",
"F.",
""
],
[
"Pettinari",
"C.",
""
],
[
"Perali",
"A.",
""
]
] | |
1511.01820 | Daniel Chen | Daniel T.N. Chen, Michael Heymann, Seth Fraden, Daniela Nicastro,
Zvonimir Dogic | ATP consumption of eukaryotic flagella measured at a single-cell level | 29 pages, 5 main figures, 4 supplemental figures, 1 supplemental
table | Biophysical Journal 109 (2015) 2562 | 10.1016/j.bpj.2015.11.003 | null | physics.bio-ph cond-mat.soft q-bio.CB | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The motility of cilia and flagella is driven by thousands of dynein motors
that hydrolyze adenosine triphosphate (ATP). Despite decades of genetic,
biochemical, structural and biophysical studies, some aspects of ciliary
motility remain elusive, such as the regulation of beating patterns and the
energetic efficiency of these nanomachines. Here, we introduce an experimental
method to measure ATP consumption of actively beating axonemes on a single-cell
level. We encapsulated individual sea urchin sperm with demembranated flagellum
inside water-in-oil emulsion droplets and measured the axonemes ATP consumption
by monitoring fluorescence intensity of a fluorophore-coupled reporter system
for ATP turnover in the droplet. Concomitant phase contrast imaging allowed us
to extract a linear dependence between the ATP consumption rate and the
flagellar beating frequency, with ~2.3e5 ATP molecules consumed per beat of a
demembranated flagellum. Increasing the viscosity of the aqueous medium led to
modified beating waveforms of the axonemes and to higher energy consumption per
beat cycle. Our single-cell experimental platform provides both new insights
into the beating mechanism of flagella and a powerful tool for future studies.
| [
{
"version": "v1",
"created": "Thu, 5 Nov 2015 17:24:41 GMT"
},
{
"version": "v2",
"created": "Mon, 21 Dec 2015 16:24:56 GMT"
}
] | 2015-12-22T00:00:00 | [
[
"Chen",
"Daniel T. N.",
""
],
[
"Heymann",
"Michael",
""
],
[
"Fraden",
"Seth",
""
],
[
"Nicastro",
"Daniela",
""
],
[
"Dogic",
"Zvonimir",
""
]
] | |
1806.01364 | Michele Pavon | Michele Pavon, Esteban G Tabak and Giulio Trigila | The data-driven Schroedinger bridge | null | null | null | null | math.OC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Erwin Schroedinger posed, and to a large extent solved in 1931/32 the problem
of finding the most likely random evolution between two continuous probability
distributions. This article considers this problem in the case when only
samples of the two distributions are available. A novel iterative procedure is
proposed, inspired by Fortet-Sinkhorn type algorithms. Since only samples of
the marginals are available, the new approach features constrained maximum
likelihood estimation in place of the nonlinear boundary couplings, and
importance sampling to propagate the functions $\varphi$ and $\hat{\varphi}$
solving the Schroedinger system. This method is well-suited to high-dimensional
settings, where introducing grids leads to numerically unfeasible or unreliable
methods. The methodology is illustrated in two applications: entropic
interpolation of two-dimensional Gaussian mixtures, and the estimation of
integrals through a variation of importance sampling.
| [
{
"version": "v1",
"created": "Mon, 4 Jun 2018 20:12:47 GMT"
},
{
"version": "v2",
"created": "Wed, 6 Jun 2018 02:11:52 GMT"
}
] | 2018-06-07T00:00:00 | [
[
"Pavon",
"Michele",
""
],
[
"Tabak",
"Esteban G",
""
],
[
"Trigila",
"Giulio",
""
]
] | |
hep-th/9805076 | Tamas Hauer | Tamas Hauer | Equivalent String Networks and Uniqueness of BPS States | 28 pages, LaTeX, 18 eps figures | Nucl.Phys. B538 (1999) 117-136 | 10.1016/S0550-3213(98)00719-6 | MIT-CTP-2740 | hep-th | null | We analyze string networks in 7-brane configurations in IIB string theory. We
introduce a complex parameter M characterizing equivalence classes of networks
on a fixed 7-brane background and specifying the BPS mass of the network as
M_{BPS} = | M |. We show that M can be calculated without knowing the
particular representative of the BPS state. Based on detailed examination of
backgrounds with three and four 7-branes we argue that equivalent networks may
not be simultaneously BPS, an essential requirement of consistency.
| [
{
"version": "v1",
"created": "Tue, 12 May 1998 20:41:38 GMT"
}
] | 2009-10-31T00:00:00 | [
[
"Hauer",
"Tamas",
""
]
] | |
1808.03443 | Georges Gras | Georges Gras (LMB) | Test of Vandiver's conjecture with Gauss sums -- Heuristics | Few corrections, new references | Proc. Indian Acad. Sci. (Math. Sci.) (2020) | 10.1007/s12044-020-00561-z | null | math.NT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The link between Vandiver's conjecture and Gauss sums is well known since the
papers of Iwasawa (1975), Thaine (1995-1999) and Angl{\`e}s-Nuccio (2010). This
conjecture is required in many subjects and we shall give such examples of
relevant references. In this paper, we recall our interpretation of Vandiver's
conjecture in terms of minus part of the torsion of the Galois group of the
maximal abelian p-ramified pro-p-extension of the pth cyclotomic field (1984).
Then we provide a specific use of Gauss sums of characters of order p of
F\_ell^x and prove new criteria for Vandiver's conjecture to hold (Theorem
1.2(a) using both the sets of exponents of p-irregularity and of p-primarity of
suitable twists of the Gauss sums, and Theorem 1.2(b) which does not need the
knowledge of Bernoulli numbers or cyclotomic units). We propose in \S5.2 new
heuristics showing that any counterexample to the conjecture leads to excessive
constraints modulo p on the above twists as ell varies and suggests analytical
approaches to evidence. We perform numerical experiments to strengthen our
arguments in direction of the very probable truth of Vandiver's conjecture. All
the calculations are given with their PARI/GP programs.
| [
{
"version": "v1",
"created": "Fri, 10 Aug 2018 07:59:26 GMT"
},
{
"version": "v2",
"created": "Wed, 29 Aug 2018 12:34:34 GMT"
},
{
"version": "v3",
"created": "Tue, 11 Dec 2018 09:30:03 GMT"
},
{
"version": "v4",
"created": "Mon, 8 Jul 2019 09:37:57 GMT"
}
] | 2021-08-17T00:00:00 | [
[
"Gras",
"Georges",
"",
"LMB"
]
] | |
hep-ph/0102237 | Sofiane Tafat | Sofiane Tafat | Nonperturbative corrections to the Drell-Yan transverse momentum
distribution | 23 pages, 3 figures | JHEP 0105:004,2001 | 10.1088/1126-6708/2001/05/004 | null | hep-ph | null | We study nonperturbative corrections to the transverse momentum distribution
of vector bosons in the Drell-Yan process. Factorizing out the Sudakov effects
due to soft gluons we express their contribution to the distribution in the
form of the vacuum averaged Wilson loop operator. We calculate the
nonperturbative contribution to the Sudakov form factor using the expansion of
the Wilson loop over vacuum fields supplemented with the expression for
nonlocal gauge invariant field strength correlator. Although the Wilson loop is
defined in an essentially Minkowski kinematics, the part of the nonperturbative
contribution depending on the invariant mass of the produced vector bosons is
governed by asymptotics of the correlator at large space-like (Euclidean)
separations and therefore can be calculated using conventional nonperturbative
methods. Applying the results of lattice calculations we found that the
obtained expression for the nonperturbative power corrections is in qualitative
agreement with known phenomenological expressions at large transverse momenta
and deviate from them at small transverse momenta.
| [
{
"version": "v1",
"created": "Mon, 19 Feb 2001 16:20:45 GMT"
},
{
"version": "v2",
"created": "Fri, 4 May 2001 15:14:00 GMT"
}
] | 2010-02-03T00:00:00 | [
[
"Tafat",
"Sofiane",
""
]
] | |
2112.11317 | Arthur Grundner | Arthur Grundner, Tom Beucler, Pierre Gentine, Fernando
Iglesias-Suarez, Marco A. Giorgetta, Veronika Eyring | Deep Learning Based Cloud Cover Parameterization for ICON | 42 pages, 17 figures, Submitted to 'Journal of Advances in Modeling
Earth Systems' (JAMES) | Journal of Advances in Modeling Earth Systems (JAMES), 2022 | 10.1029/2021MS002959 | null | physics.ao-ph cs.LG | http://creativecommons.org/licenses/by/4.0/ | A promising approach to improve cloud parameterizations within climate models
and thus climate projections is to use deep learning in combination with
training data from storm-resolving model (SRM) simulations. The ICOsahedral
Non-hydrostatic (ICON) modeling framework permits simulations ranging from
numerical weather prediction to climate projections, making it an ideal target
to develop neural network (NN) based parameterizations for sub-grid scale
processes. Within the ICON framework, we train NN based cloud cover
parameterizations with coarse-grained data based on realistic regional and
global ICON SRM simulations. We set up three different types of NNs that differ
in the degree of vertical locality they assume for diagnosing cloud cover from
coarse-grained atmospheric state variables. The NNs accurately estimate
sub-grid scale cloud cover from coarse-grained data that has similar
geographical characteristics as their training data. Additionally, globally
trained NNs can reproduce sub-grid scale cloud cover of the regional SRM
simulation. Using the game-theory based interpretability library SHapley
Additive exPlanations, we identify an overemphasis on specific humidity and
cloud ice as the reason why our column-based NN cannot perfectly generalize
from the global to the regional coarse-grained SRM data. The interpretability
tool also helps visualize similarities and differences in feature importance
between regionally and globally trained column-based NNs, and reveals a local
relationship between their cloud cover predictions and the thermodynamic
environment. Our results show the potential of deep learning to derive accurate
yet interpretable cloud cover parameterizations from global SRMs, and suggest
that neighborhood-based models may be a good compromise between accuracy and
generalizability.
| [
{
"version": "v1",
"created": "Tue, 21 Dec 2021 16:10:45 GMT"
},
{
"version": "v2",
"created": "Tue, 10 May 2022 14:19:00 GMT"
},
{
"version": "v3",
"created": "Tue, 6 Dec 2022 10:58:21 GMT"
}
] | 2023-04-18T00:00:00 | [
[
"Grundner",
"Arthur",
""
],
[
"Beucler",
"Tom",
""
],
[
"Gentine",
"Pierre",
""
],
[
"Iglesias-Suarez",
"Fernando",
""
],
[
"Giorgetta",
"Marco A.",
""
],
[
"Eyring",
"Veronika",
""
]
] | |
1406.6429 | Daniel Bienstock | Daniel Bienstock | A note on polynomial solvability of the CDT problem | null | null | null | null | math.OC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We describe a simple polynomial-time algorithm for the CDT problem that
relies on a construction of Barvinok.
| [
{
"version": "v1",
"created": "Wed, 25 Jun 2014 01:11:31 GMT"
},
{
"version": "v2",
"created": "Sun, 6 Jul 2014 12:42:46 GMT"
},
{
"version": "v3",
"created": "Mon, 9 Feb 2015 16:39:42 GMT"
},
{
"version": "v4",
"created": "Thu, 19 Feb 2015 00:00:28 GMT"
},
{
"version": "v5",
"created": "Fri, 20 Feb 2015 16:01:18 GMT"
},
{
"version": "v6",
"created": "Mon, 23 Feb 2015 13:49:20 GMT"
}
] | 2015-02-24T00:00:00 | [
[
"Bienstock",
"Daniel",
""
]
] | |
2403.18747 | Samuel Seddon | S. D. Seddon, C. R. S. Haines, T. P. A. Hase, M. R. Lees, L. M. Eng,
M. Alexe, M. A. Carpenter | Ferroelastic control of magnetic domain structure: direct imaging by
Magnetic Force Microscopy | null | null | null | null | cond-mat.mtrl-sci physics.app-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Pyrrhotite, Fe$_7$S$_8$, provides an example of exceptionally strong
magnetoelastic coupling through pinning of ferromagnetic domains by
ferroelastic twins. Using direct imaging of both magnetic and ferroelastic
domains by magnetic force microscopy (MFM), the mechanism by which this
coupling controls local magnetic switching behaviour of regions on the
pyrrhotite surface is revealed, and leads to quantitative fitting of field
dependent MFM phase shifts with bulk magnetometry data. It is shown that
characteristic inflection points in the magnetometry data along certain
direction, in particular $[\overline 120]^*_h$ of the hexagonal parent
structure, are in fact caused by ferroelastic pinning of the magnetic moments.
| [
{
"version": "v1",
"created": "Wed, 27 Mar 2024 16:46:53 GMT"
}
] | 2024-03-28T00:00:00 | [
[
"Seddon",
"S. D.",
""
],
[
"Haines",
"C. R. S.",
""
],
[
"Hase",
"T. P. A.",
""
],
[
"Lees",
"M. R.",
""
],
[
"Eng",
"L. M.",
""
],
[
"Alexe",
"M.",
""
],
[
"Carpenter",
"M. A.",
""
]
] | |
2210.01692 | Jiayi Wang | Jiayi Wang and Diogo Luvizon and Franziska Mueller and Florian Bernard
and Adam Kortylewski and Dan Casas and Christian Theobalt | HandFlow: Quantifying View-Dependent 3D Ambiguity in Two-Hand
Reconstruction with Normalizing Flow | VMV 2022 - Symposium on Vision, Modeling, and Visualization | null | null | null | cs.CV | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Reconstructing two-hand interactions from a single image is a challenging
problem due to ambiguities that stem from projective geometry and heavy
occlusions. Existing methods are designed to estimate only a single pose,
despite the fact that there exist other valid reconstructions that fit the
image evidence equally well. In this paper we propose to address this issue by
explicitly modeling the distribution of plausible reconstructions in a
conditional normalizing flow framework. This allows us to directly supervise
the posterior distribution through a novel determinant magnitude
regularization, which is key to varied 3D hand pose samples that project well
into the input image. We also demonstrate that metrics commonly used to assess
reconstruction quality are insufficient to evaluate pose predictions under such
severe ambiguity. To address this, we release the first dataset with multiple
plausible annotations per image called MultiHands. The additional annotations
enable us to evaluate the estimated distribution using the maximum mean
discrepancy metric. Through this, we demonstrate the quality of our
probabilistic reconstruction and show that explicit ambiguity modeling is
better-suited for this challenging problem.
| [
{
"version": "v1",
"created": "Tue, 4 Oct 2022 15:42:22 GMT"
}
] | 2022-10-05T00:00:00 | [
[
"Wang",
"Jiayi",
""
],
[
"Luvizon",
"Diogo",
""
],
[
"Mueller",
"Franziska",
""
],
[
"Bernard",
"Florian",
""
],
[
"Kortylewski",
"Adam",
""
],
[
"Casas",
"Dan",
""
],
[
"Theobalt",
"Christian",
""
]
] | |
0711.2122 | Mohammad Sami | R. Chingangbam, M. Sami, P. V. Tretyakov, A.V. Toporensky | A Note on the Viability of Gauss-Bonnet Cosmology | 6 latex pages, 4 eps figures, typos corrected and references added,
final version to appear in Phys. Lett. B | Phys.Lett.B661:162-166,2008 | 10.1016/j.physletb.2008.01.070 | null | hep-th astro-ph gr-qc hep-ph | null | In this paper, we analyze the viability of a vacuum Gauss-Bonnet cosmology by
examining the dynamics of the homogeneous and anisotropic background in 4+1
dimensions. The trajectories of the system either originate from the standard
singularity or from non-standard type, the later is characterized by the
divergence of time derivative of the Hubble parameters for its finite value. At
the onset, the system should relax to Einstein phase at late times as the
effect of Gauss-Bonnet term becomes negligible in the low energy regime.
However, we find that most of the trajectories emerging from the standard
big-bang singularity lead to future re-collapse whereas the system beginning
its evolution from the non-standard singularity enters the Kasner regime at
late times. This leads to the conclusion that the measure of trajectories
giving rise to a smooth evolution from a standard singularity to the Einstein
phase is negligibly small for generic initial conditions.
| [
{
"version": "v1",
"created": "Wed, 14 Nov 2007 07:34:11 GMT"
},
{
"version": "v2",
"created": "Fri, 15 Feb 2008 08:50:37 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Chingangbam",
"R.",
""
],
[
"Sami",
"M.",
""
],
[
"Tretyakov",
"P. V.",
""
],
[
"Toporensky",
"A. V.",
""
]
] | |
1008.2821 | Makoto Katori | Makoto Katori, Hideki Tanemura | Complex Brownian Motion Representation of the Dyson Model | v5:AMS-LaTeX, 19 pages, no figure, final version appearing in ECP | Electron. Commun. Probab. 18 (2013), no.4, 1-16 | 10.1214/ECP.v18-2554 | null | math.PR cond-mat.stat-mech hep-th math-ph math.MP nlin.SI | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dyson's Brownian motion model with the parameter $\beta=2$, which we simply
call the Dyson model in the present paper, is realized as an $h$-transform of
the absorbing Brownian motion in a Weyl chamber of type A. Depending on initial
configuration with a finite number of particles, we define a set of entire
functions and introduce a martingale for a system of independent complex
Brownian motions (CBMs), which is expressed by a determinant of a matrix with
elements given by the conformal transformations of CBMs by the entire
functions. We prove that the Dyson model can be represented by the system of
independent CBMs weighted by this determinantal martingale. From this CBM
representation, the Eynard-Mehta-type correlation kernel is derived and the
Dyson model is shown to be determinantal. The CBM representation is a useful
extension of $h$-transform, since it works also in infinite particle systems.
Using this representation, we prove the tightness of a series of processes,
which converges to the Dyson model with an infinite number of particles, and
the noncolliding property of the limit process.
| [
{
"version": "v1",
"created": "Tue, 17 Aug 2010 05:23:05 GMT"
},
{
"version": "v2",
"created": "Mon, 4 Apr 2011 10:52:46 GMT"
},
{
"version": "v3",
"created": "Wed, 3 Aug 2011 07:15:16 GMT"
},
{
"version": "v4",
"created": "Sun, 30 Sep 2012 08:39:16 GMT"
},
{
"version": "v5",
"created": "Tue, 15 Jan 2013 12:11:59 GMT"
}
] | 2013-01-16T00:00:00 | [
[
"Katori",
"Makoto",
""
],
[
"Tanemura",
"Hideki",
""
]
] | |
1502.01351 | William Jacobs | William M. Jacobs, Aleks Reinhardt and Daan Frenkel | Rational design of self-assembly pathways for complex multicomponent
structures | Accompanying code for computing free-energy landscapes of addressable
structures can be found at https://github.com/wmjac/pygtsa | Proc. Natl Acad. Sci. USA 112, 6313-6318 (2015) | 10.1073/pnas.1502210112 | null | cond-mat.soft cond-mat.mtrl-sci | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The field of complex self-assembly is moving toward the design of
multi-particle structures consisting of thousands of distinct building blocks.
To exploit the potential benefits of structures with such `addressable
complexity,' we need to understand the factors that optimize the yield and the
kinetics of self-assembly. Here we use a simple theoretical method to explain
the key features responsible for the unexpected success of DNA-brick
experiments, which are currently the only demonstration of reliable
self-assembly with such a large number of components. Simulations confirm that
our theory accurately predicts the narrow temperature window in which
error-free assembly can occur. Even more strikingly, our theory predicts that
correct assembly of the complete structure may require a time-dependent
experimental protocol. Furthermore, we predict that low coordination numbers
result in non-classical nucleation behavior, which we find to be essential for
achieving optimal nucleation kinetics under mild growth conditions. We also
show that, rather surprisingly, the use of heterogeneous bond energies improves
the nucleation kinetics and in fact appears to be necessary for assembling
certain intricate three-dimensional structures. This observation makes it
possible to sculpt nucleation pathways by tuning the distribution of
interaction strengths. These insights not only suggest how to improve the
design of structures based on DNA bricks, but also point the way toward the
creation of a much wider class of chemical or colloidal structures with
addressable complexity.
| [
{
"version": "v1",
"created": "Wed, 4 Feb 2015 21:00:14 GMT"
}
] | 2015-06-02T00:00:00 | [
[
"Jacobs",
"William M.",
""
],
[
"Reinhardt",
"Aleks",
""
],
[
"Frenkel",
"Daan",
""
]
] |
Subsets and Splits