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On the basis of the sequence of marginal observables the evolution equations of the microscopic phase density and its generalizations is discussed. We introduced dual BBGKY hierarchy for these microscopic observables and their average…

数学物理 · 物理学 2011-12-14 V. O. Shtyk

Preparing thermal (Gibbs) states is a common task in physics and computer science. Recent algorithms mimic cooling via system-bath coupling, where the cost is determined by mixing time, akin to classical Metropolis-like algorithms. However,…

量子物理 · 物理学 2024-12-13 David Gamarnik , Bobak T. Kiani , Alexander Zlokapa

Compressible lattice gas models are used in material science to understand the coupling between composition and strain in alloys. The seminal work in this field is the 1973 Larch\'{e}-Cahn paper (Acta Metall. 21, 1051-1063). Single-phase…

材料科学 · 物理学 2025-08-20 Michiel Sprik

The hydrodynamic equation governing the homogeneous time evolution of the temperature in a model of confined granular gas is studied by means of the Enskog equation. The existence of a normal solution of the kinetic equation is assumed as a…

统计力学 · 物理学 2015-06-18 J. Javier Brey , P. Maynar , M. I. García de Soria , V. Buzón

It is widely believed that the stationary properties after a quantum quench in integrable systems can be described by a generalized Gibbs ensemble (GGE), even if all the analytical evidence is based on free theories in which the pre- and…

量子气体 · 物理学 2014-01-22 Márton Kormos , Mario Collura , Pasquale Calabrese

A complex interplay between the academic issue about generalization of the thermodynamics and the practical matter about setting standards for a sustainable evolution of both tailored devices and natural systems is considered. It is…

综合物理 · 物理学 2009-02-24 Maria K. Koleva

Thermodynamics as limiting behaviors of statistics is generalized to arbitrary system with probability {\it a priori} where thermodynamic infinite-size limit is replaced by multiple-measurement limit. A duality symmetry between Massieu's…

统计力学 · 物理学 2022-09-28 Zhiyue Lu , Hong Qian

Granular solid hydrodynamics (GSH) is a continuum-mechanical theory for granular media, the range of which is shown in this paper. Simple, frequently analytic solutions are related to classic observations at different shear rates,…

软凝聚态物质 · 物理学 2017-01-25 Yimin Jiang , Mario Liu

We consider a molecular dynamics method, the so-called flea gas for computing the evolution of entanglement after inhomogeneous quantum quenches in an integrable quantum system. In such systems the evolution of local observables is…

统计力学 · 物理学 2020-04-15 Márton Mestyán , Vincenzo Alba

We consider the Generalized Gibbs Ensemble (GGE) in the context of global quantum quenches in XXZ Heisenberg spin chains. Embedding the GGE into the Quantum Transfer Matrix formalism we develop an iterative procedure to fix the…

统计力学 · 物理学 2015-06-15 Balázs Pozsgay

Ground states of interacting QFTs are non-gaussian states, i.e. their connected n-point correlation functions do not vanish for n>2, in contrast to the free QFT case. We show that when the ground state of an interacting QFT evolves under a…

高能物理 - 理论 · 物理学 2016-01-26 Spyros Sotiriadis , Gabriele Martelloni

The formation of dispersive shock waves in the one-dimensional Bose gas represents a limitation of Generalized Hydrodynamics (GHD) due to the coarse-grained nature of the theory. Nevertheless, GHD accurately captures the long wavelength…

统计力学 · 物理学 2025-02-11 Frederik Møller , Philipp Schüttelkopf , Jörg Schmiedmayer , Sebastian Erne

We study the entanglement in a chain of harmonic oscillators driven out of equilibrium by preparing the two sides of the system at different temperatures, and subsequently joining them together. The steady state is constructed explicitly…

统计力学 · 物理学 2014-12-11 Viktor Eisler , Zoltan Zimboras

We present steps towards an ab initio derivation of generalised hydrodynamics in quantum integrable models, starting from the Bethe wave functions, and explained on the example of the repulsive Lieb-Liniger model. This includes an…

统计力学 · 物理学 2026-04-30 Benjamin Doyon , Friedrich Hübner

The time evolution of an extended quantum system can be theoretically described in terms of the Schwinger-Keldysh functional integral formalism, whose action conveniently encodes the information about the dynamics. We show here that the…

统计力学 · 物理学 2015-11-11 L. M. Sieberer , A. Chiocchetta , A. Gambassi , U. C. Täuber , S. Diehl

Macroscopic thermodynamics, via the weak coupling approximation, assumes that the equi?librium properties of a system are not affected by interactions with its environment. However, this assumption may not hold for quantum systems, where…

量子物理 · 物理学 2023-05-23 Z. Abuali , F. H. Kamin , R. J. S. Afonso , D. O. Soares-Pinto , S. Salimi

A full viscous quantum hydrodynamic system for particle density, current density, energy density and electrostatic potential coupled with a Poisson equation in one dimensional bounded intervals is studied. First, the existence and…

偏微分方程分析 · 数学 2023-07-03 Xiaoying Han , Yuming Qin , Wenlong Sun

For a quantum system in a macroscopically large volume $V$, prepared in a pure state and subject to maximally noisy or ergodic unitary dynamics, the reduced density matrix of any sub-system $v\ll V$ is almost surely totally mixed. We show…

统计力学 · 物理学 2020-01-15 Michel Bauer , Denis Bernard , Tony Jin

We study the long time behaviour of local observables following a quantum quench in 1+1 dimensional conformal field theories possessing additional conserved charges besides the energy. We show that the expectation value of an arbitrary…

高能物理 - 理论 · 物理学 2015-09-02 Gautam Mandal , Ritam Sinha , Nilakash Sorokhaibam

In recent years, a lot of effort has been put in describing the hydrodynamic behavior of integrable systems. In this paper, we describe such picture for the Volterra lattice. Specifically, we are able to explicitly compute the…

数学物理 · 物理学 2024-10-15 Guido Mazzuca