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We extend the data compression theorem to the case of ergodic quantum information sources. Moreover, we provide an asymptotically optimal compression scheme which is based on the concept of high probability subspaces. The rate of this…

量子物理 · 物理学 2007-05-23 Igor Bjelakovic , Arleta Szkola

The Cauchy problem for the complete Euler system is in general ill posed in the class of admissible (entropy producing) weak solutions. This suggests there might be sequences of approximate solutions that develop fine scale oscillations.…

数值分析 · 数学 2018-03-23 Eduard Feireisl , Maria Lukacova-Medvidova , Hana Mizerova

This paper is devoted to the study of relativistic Vlasov-Maxwell system in three space dimension. For a class of large initial data, we prove the global existence of classical solution with sharp decay estimate. The initial Maxwell field…

偏微分方程分析 · 数学 2021-02-24 Dongyi Wei , Shiwu Yang

Inspired by Katok's intermediate entropy property [Inst. Hautes \'Etudes Sci. Publ. Math. 51 (1980), 137-173], we introduce and study the notion of entropy flexibility for discrete-time and continuous-time dynamical systems. By using…

动力系统 · 数学 2025-07-18 Alexander Arbieto , Piotr Oprocha , Elias Rego

In this paper, we introduce the generalized phase space $\left( \vec{r},\vec{v},\dot{\vec{v}},\ddot{\vec{v}},... \right)$, which expands the known phase space $\left( \vec{r},\vec{v} \right)$. The fact is that the introduced space is the…

统计力学 · 物理学 2017-05-24 E. E. Perepelkin , B. I. Sadovnikov , N. G. Inozemtseva

We cast the non--isentropic relativistic Euler system into a symmetric hyperbolic form. Such systems are very suited to treat initial value problems of hyperbolic type. We obtain this form by using the pressure $p$ and not the density…

数学物理 · 物理学 2025-01-22 Uwe Brauer , Lavi Karp

In this article, I give a definition of topological entropy for random dynamical systems associated to an infinite countable discrete amenable group action. I obtain a variational principle between the topological entropy and measurable…

动力系统 · 数学 2024-03-13 Yuan Lian

Using a recent published formula for the number of information N that results from Landauer's principle we obtain an expression for the cosmological constant Lambda. Next, assuming the universe as a system of mass M satisfying Landauer's…

综合物理 · 物理学 2015-06-16 Ioannis Gkigkitzis , Ioannis Haranas , Samantha Kirk

Increasing the number $N$ of elements of a system typically makes the entropy to increase. The question arises on {\it what particular entropic form} we have in mind and {\it how it increases} with $N$. Thermodynamically speaking it makes…

统计力学 · 物理学 2009-11-11 Constantino Tsallis

The paper analyzes the entropy of a system composed by non-interacting and indistinguishable particles whose quantum state numbers are modelled as independent and identically distributed classical random variables. The crucial observation…

统计力学 · 物理学 2023-05-18 Arnaldo Spalvieri

We propose a new finite volume scheme for the Euler system of gas dynamics motivated by the model proposed by H. Brenner. Numerical viscosity imposed through upwinding acts on the velocity field rather than on the convected quantities. The…

数值分析 · 数学 2018-05-15 Eduard Feireisl , Maria Lukacova-Medvidova , Hana Mizerova

We introduce the concept of maximal dissipative measure-valued solution to the complete Euler system. These are solutions that maximize the entropy production rate. We show that these solutions exist under fairly general hypotheses imposed…

偏微分方程分析 · 数学 2017-12-14 Jan Brezina , Eduard Feireisl

We introduce a constructive framework for assigning thermodynamic structure to an arbitrary data system from its measured microstates. Starting from an empirical distribution over configurations, we first infer a data-driven energy function…

统计力学 · 物理学 2026-04-29 George-Rafael Domenikos , Lock Yue Chew , Victoria Leong

Different notions of entropy play a fundamental role in the classical theory of dynamical systems. Unlike many other concepts used to analyze autonomous dynamics, both measure-theoretic and topological entropy can be extended quite…

动力系统 · 数学 2017-08-03 Christoph Kawan

In this paper, we prove the existence of smooth initial data for the 2D free boundary incompressible Euler equations (also known for some particular scenarios as the water wave problem), for which the smoothness of the interface breaks down…

偏微分方程分析 · 数学 2012-10-02 Angel Castro , Diego Córdoba , Charles Fefferman , Francisco Gancedo , Javier Gómez-Serrano

Maximum-entropy ensembles are key primitives in statistical mechanics from which thermodynamic properties can be derived. Over the decades, several approaches have been put forward in order to justify from minimal assumptions the use of…

量子物理 · 物理学 2018-03-13 Paul Boes , Henrik Wilming , Jens Eisert , Rodrigo Gallego

The entropy of the states associated to the solutions of the equations of motion of the bosonic open string with combinations of Neumann and Dirichlet boundary conditions is given. Also, the entropy of the string in the states $| A^i > =…

高能物理 - 理论 · 物理学 2009-11-07 M. C. B. Abdalla , E. L. Graca , I. V. Vancea

We consider overdamped physical systems evolving under a feedback-controlled fluctuating potential and in contact with a thermal bath at temperature $T$. A Markovian description of the dynamics, which keeps only the last value of the…

统计力学 · 物理学 2026-02-12 Natalia Ruiz-Pino , Antonio Prados

We study the von Neumann entropy asymptotics of pure translation-invariant quasi-free states of d-dimensional fermionic systems. It is shown that the entropic area law is violated by all these states: apart from the trivial cases, the…

数学物理 · 物理学 2011-05-09 S. Farkas , Z. Zimboras

A surrogate data analysis is presented, which is based on the fluctuations of the ``entropy'' $S$ defined in the natural time-domain [Phys. Rev. E {\bf 68}, 031106, 2003]. This entropy is not a static one as, for example, the Shannon…

数据分析、统计与概率 · 物理学 2007-05-23 P. A. Varotsos , N. V. Sarlis , E. S. Skordas , M. S. Lazaridou