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We study the evolution of Tsallis entropy along the heat flow and establish its concavity in arbitrary dimensions. Extending prior results that were restricted to the one-dimensional setting, we prove that the Tsallis entropy is concave in…

信息论 · 计算机科学 2026-04-24 Lukang Sun

This paper reports a relation between ionic conductivity and electric current fluctuations. The relation was derived using statistical analysis and entropy approach. The relation can be used to calculate ionic conductivity.

统计力学 · 物理学 2016-07-26 Yong-Jun Zhang

Using a Corner Transfer Matrix approach, we compute the bipartite entanglement R\'enyi entropy in the off-critical perturbations of non-unitary conformal minimal models realised by lattice spin chains Hamiltonians related to the Forrester…

高能物理 - 理论 · 物理学 2016-07-18 Davide Bianchini , Francesco Ravanini

Within generalized random energy models, we study the effects of energy discreteness and of entropy extensivity in the low temperature phase. At zero temperature, discreteness of the energy induces replica symmetry breaking, in contrast to…

无序系统与神经网络 · 物理学 2009-11-07 M. Sasaki , O. C. Martin

The $\alpha$-R\'enyi entropy in the gapless models have been obtained by the conformal field theory, which is exact in the thermodynamic limit. However, the calculation of its finite size effect (FSE) is challenging. So far only the FSE in…

量子物理 · 物理学 2022-05-04 Long Xiong , Shunyao Zhang , Guangcan Guo , Ming Gong

In this work, Entropy-Stable (ES) schemes are formulated for the multicomponent compressible Euler equations. Entropy-conservative (EC) and ES fluxes are derived. Particular attention is paid to the limit case of zero partial densities…

数值分析 · 数学 2020-02-25 Ayoub Gouasmi , Karthik Duraisamy , Scott Murman

By using the Jacobi metric of the configuration space, and assuming ergodicity, we calculate the Boltzmann entropy $S$ of a finite-dimensional system around a non-degenerate critical point of its potential energy $V$. We compare $S$ with…

数学物理 · 物理学 2009-11-11 Nikos Kalogeropoulos

We investigate the behavior of the rare fluctuations of the free energy in the p-spin spherical model, evaluating the corresponding rate function via the G\"artner-Ellis theorem. This approach requires the knowledge of the analytic…

无序系统与神经网络 · 物理学 2019-11-27 Mauro Pastore , Andrea Di Gioacchino , Pietro Rotondo

Entanglement entropy in topologically ordered matter phases has been computed extensively using various methods. In this paper, we study the entanglement entropy of topological phases in two-spaces from a new perspective---the perspective…

强关联电子 · 物理学 2019-06-14 Yuting Hu , Yidun Wan

Spin-currents and non-abelian gauge potentials in electronic systems can be treated by spin-current-density functional theory, whose main input is the exchange-correlation (xc) energy expressed as a functional of spin-currents. Constructing…

材料科学 · 物理学 2010-03-30 Saeed H. Abedinpour , G. Vignale , I. V. Tokatly

The theory of superstatistics, originally proposed for the study of complex nonequilibrium systems, has recently been extended to studies of small systems interacting with a finite environment, because such systems display interestingly…

统计力学 · 物理学 2023-04-19 Constanza Farías , Sergio Davis

We report the investigation of full-counting statistics (FCS) of transferred charge and spin in the transient regime where the connection between central scattering region (quantum dot) and leads are turned on at $t=0$. A general…

统计力学 · 物理学 2014-12-15 Gao-Min Tang , Jian Wang

We theoretically investigate the electric transport in the pseudogap state of High-Tc cuprates. Starting from the repulsive Hubbard model, we perform the microscopic calculation to describe the pseudogap phenomena which are induced by the…

强关联电子 · 物理学 2016-08-31 Youichi Yanase

The relationships between reversible Carnot cycles, the absence of perpetual motion machines and the existence of a non-decreasing, globally unique entropy function forms the starting point of many textbook presentations of the foundations…

统计力学 · 物理学 2015-05-14 O. J. E. Maroney

With use of the Second Inverse Maximum Entropy Principle we find entropy functions for systems with fractal distribution functions with order parameter $q$. We compare these entropy functions with those given by the Bose-Einstein and…

统计力学 · 物理学 2023-03-27 Marcelo R. Ubriaco

A diagrammatic kinetic theory of density fluctuations in simple dense liquids at long times, described in the preceding paper, is applied to a high density Lennard-Jones liquid to calculate various equilibrium time correlation functions.…

统计力学 · 物理学 2015-06-18 Kevin R. Pilkiewicz , Hans C. Andersen

Domain-wall free-energy $\delta F$, entropy $\delta S$, and the correlation function, $C_{\rm temp}$, of $\delta F$ are measured independently in the four-dimensional $\pm J$ Edwards-Anderson (EA) Ising spin glass. The stiffness exponent…

无序系统与神经网络 · 物理学 2009-11-10 M. Sasaki , K. Hukushima , H. Yoshino , H. Takayama

Density-wave instabilities have been observed and studied in a multitude of materials. Most recently, in the context of unconventional superconductors like the iron-based superconductors, they have excited considerable interest. We analyze…

强关联电子 · 物理学 2018-08-31 Mareike Hoyer , Jörg Schmalian

We consider the initial energy density in the transverse plane of a high energy nucleus-nucleus collision as a random field $\rho(\x)$, whose probability distribution $P[\rho]$, the only ingredient of the present description, encodes all…

核理论 · 物理学 2014-10-06 Jean-Paul Blaizot , Wojciech Broniowski , Jean-Yves Ollitrault

The frequency spectra of the entropy and kinetic energy along with the power spectrum of the thermal flux are computed from direct numerical simulations for turbulent Rayleigh-B\'{e}nard convection with uniform rotation about a vertical…

流体动力学 · 物理学 2014-11-11 Hirdesh K. Pharasi , Krishna Kumar , Jayanta K. Bhattacharjee
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