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We present a local Master equation for open system dynamics in two forms: Markovian and non-Markovian. Both have a wider range of validity than the Lindblad equation investigated by Davies. For low temperatures, they do not require coupling…

量子物理 · 物理学 2016-11-15 Evgeny Mozgunov

A complete classification of integrable conservative hydrodynamic chains is presented. These hydrodynamic chains are written via special coordinates -- moments, such that right hand sides of these infinite component systems depend linearly…

可精确求解与可积系统 · 物理学 2009-12-31 Maxim V. Pavlov , Sergej A. Zykov

The framework of anisotropic hydrodynamics is generalized to include finite particle masses. Two schemes are introduced and their predictions compared with exact solutions of the kinetic equation in the relaxation time approximation. The…

高能物理 - 唯象学 · 物理学 2014-05-22 Wojciech Florkowski , Radoslaw Ryblewski , Michael Strickland , Leonardo Tinti

We construct the theory of dissipative hydrodynamics of uncharged fluids living on embedded space-time surfaces to first order in a derivative expansion in the case of codimension-1 surfaces (including fluid membranes) and the theory of…

高能物理 - 理论 · 物理学 2014-12-23 Jay Armas

We prove the existence of non-hydrodynamic solutions to the linear density-dependent BGK equation in $d$ dimensions. Specifically, we show the existence of an initial condition for any Knudsen number $\tau$ for which the dissipation rate of…

偏微分方程分析 · 数学 2026-01-22 Florian Kogelbauer

We present a general and practical procedure to solve the general relativistic hydrodynamic equations by using any of the special relativistic Riemann solvers recently developed for describing the evolution of special relativistic flows.…

天体物理学 · 物理学 2007-05-23 Jose A. Pons , Jose A. Font , Jose M. Ibanez , Jose M. Marti , Juan A. Miralles

We propose a solution for the inverse kinetic theory for quantum hydrodynamic equations associated to the non-relativistic Schr\"{o}dinger equation. It is shown that an inverse kinetic equation of the form of the Vlasov equation can be…

量子物理 · 物理学 2008-11-26 Massimo Tessarotto , Marco Ellero , Piero Nicolini

We demonstrate that Pleba\'nski's first heavenly equation decouples in infinitely many ways into a triple of commuting (1+1)-dimensional systems of hydrodynamic type which satisfy the Egorov property. Solving these systems by the…

可精确求解与可积系统 · 物理学 2009-11-10 E. V. Ferapontov , M. V. Pavlov

We investigate a kinetic model for compressible non-ideal fluids [DOI:10.1103/PhysRevE.102.020103]. The model imposes the local thermodynamic pressure through a rescaling of the particles velocities, which accounts for both long- and…

流体动力学 · 物理学 2021-02-02 Ehsan Reyhanian , Benedikt Dorschner , Ilya Karlin

Simple, self-similar, analytic solutions of 1+1 dimensional relativistic hydrodynamics are presented, generalizing Bjorken's solution to inhomogeneous rapidity distribution.

高能物理 - 唯象学 · 物理学 2008-11-26 T. Csorgo , F. Grassi , Y. Hama , T. Kodama

We use the weakly nonlocal hydrodynamics approach to obtain a dynamical equation for the peculiar velocity field in which the viscosity term is physically motivated. Based on some properties of the Ginzburg-Landau equation and the wave…

天体物理学 · 物理学 2009-11-10 A. L. B. Ribeiro , J. G. Peixoto de Faria

The Navier-Stokes equations, are understood as the result of the low-order expansion in powers of dimensionless rate of strain $\eta_{ij}=\tau_{0}S_{ij}$, where $\tau_{0}$ is the microscopic relaxation time of a close-to- thermodynamic…

流体动力学 · 物理学 2007-05-23 Victor Yakhot , Hudong Chen , Ilia Staroselsky , John Wanderer , Raoyang Zhang

We extend a recent proof of hyperbolicity of the exact (to all orders in Knudsen number) linear hydrodynamic equations [M. Colangeli et al, Phys. Rev. E (2007), in press; arXiv:cond-mat/0703791v2] to the three-dimensional Grad's moment…

统计力学 · 物理学 2007-08-13 M. Colangeli , I. V. Karlin , M. Kroger

In a recent paper by Grunewald et.al., a new method to study hydrodynamic limits was developed for reversible dynamics. In this work, we generalize this method to a family of non-reversible dynamics. As an application, we obtain…

偏微分方程分析 · 数学 2015-02-20 Manh Hong Duong , Max Fathi

We use a macroscopic description of a system of relativistic particles based on adding a nonequilibrium tensor to the usual hydrodynamic variables. The nonequilibrium tensor is linked to relativistic kinetic theory through a nonlinear…

核理论 · 物理学 2015-06-12 J. Peralta-Ramos , E. Calzetta

On the basis of the Navier-Stokes equations we develop the statistical theory of many space-time correlation functions of velocity differences. Their time dependence is {\em not} scale invariant: $n$-order correlations functions exhibit…

chao-dyn · 物理学 2016-08-31 Victor S. L'vov , Evgenii Podivilov , Itamar Procaccia

The hydrodynamic equations for a model of a confined quasi-two-dimensional gas of smooth inelastic hard spheres are derived from the Boltzmann equation for the model, using a generalization of the Chapman-Enskog method. The heat and…

统计力学 · 物理学 2015-06-11 J. Javier Brey , V. Buzón , P. Maynar , M. I. García de Soria

Recently, a hydrodynamic description of local equilibrium dynamics in quantum integrable systems was discovered. In the diffusionless limit, this is equivalent to a certain "Bethe-Boltzmann" kinetic equation, which has the form of an…

统计力学 · 物理学 2017-10-10 Vir B. Bulchandani

The equations of continuum hydrodynamics can be derived from the Boltzmann equation, which describes rarefied gas dynamics at the kinetic level, by means of the Chapman-Enskog expansion. This expansion assumes a small Knudsen number, and as…

统计力学 · 物理学 2011-10-07 Carlos Escudero

In this work, the first-order constitutive equations for a relativistic charged gas are obtained based on the Chapman-Enskog expansion of near-equilibrium solutions to the Boltzmann equation by implementing the projection method. To this…

广义相对论与量子宇宙学 · 物理学 2026-04-01 Carlos Gabarrete , Ana Laura García-Perciante , Olivier Sarbach