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The clearing up of a wave nature of the energy and mass transfer phenomena in classical expressions of the molecular-kinetic theory has allowed to find a quantitative measure of intensity of processes of a thermal conductivity, viscosity…

流体动力学 · 物理学 2007-05-23 S. L. Arsenjev , I. B. Lozovitski , Y. P. Sirik

We use a simple model consisting of energy-momentum tensor conservation and a Maxwell-Cattaneo equation for its viscous part to study nonlinear phenomena in a real relativistic fluid. We focus on new types of behavior without…

广义相对论与量子宇宙学 · 物理学 2021-03-31 Esteban Calzetta

The prevalence and consequences of convection perpendicular to the plane of accretion discs have been discussed for several decades. Recent simulations combining convection and the magnetorotational instability have given fresh impetus to…

太阳与恒星天体物理 · 物理学 2018-08-08 Loren E. Held , Henrik N. Latter

The collective non-equilibrium dynamics of multi-component mixtures of interacting active (self-propelled) and passive (diffusive) particles have garnered great interest in the physics community. However, the mathematical understanding of…

概率论 · 数学 2025-01-28 Deyue Li

Particles confined in droplets are called compound particles. They are encountered in various biological and soft matter systems. Hydrodynamics can play a decisive role in determining the configuration and stability of these multiphase…

软凝聚态物质 · 物理学 2019-08-23 Sravana Chaithanya , Sumesh P Thampi

We derive analytical expressions for the spectral moments of the dynamical response functions of the Hubbard model using the high-temperature series expansion. We consider generic dimension $d$ as well as the infinite-$d$ limit, arbitrary…

We study an initial and boundary value problem modelling the motion of a rigid body in a heat conducting gas. The solid is supposed to be a perfect thermal insulator. The gas is described by the compressible Navier-Stokes-Fourier equations,…

偏微分方程分析 · 数学 2017-10-24 Bernhard H. Haak , Debayan Maity , Takéo Takahashi , Marius Tucsnak

Active particles with a temperature distribution, "hot particles", have a distinct effect on the fluid that surrounds them. The temperature gradients they create deem the fluid's viscosity spatially dependent, therefore violating the…

软凝聚态物质 · 物理学 2024-08-27 Osher Arbib , Naomi Oppenheimer

There is a clear distinction between simple laminar and complex turbulent fluids. But in some cases, as for the nocturnal planetary boundary layer, a stable and well-ordered flow can develop intense and sporadic bursts of turbulent activity…

流体动力学 · 物理学 2015-06-17 C. Rorai , P. D. Mininni , A. Pouquet

We have studied the effect of nonzero bulk viscosity with peak near the lattice QCD predicted crossover temperature $T_{co}\sim 175 MeV$ on charged particle transverse momentum spectra and elliptic flow. The Israel-Stewart theory of 2nd…

核理论 · 物理学 2013-05-30 Victor Roy , A. K. Chaudhuri

The paper concerns the construction of a compressible liquid-vapor relaxation model which is able to capture the metastable states of the non isothermal van der Waals model as well as saturation states. Starting from the Gibbs formalism, we…

偏微分方程分析 · 数学 2019-11-01 Hala Ghazi , Francois James , Hélène Mathis

We introduce new classes of hydrodynamic theories inspired by the recently discovered fracton phases of quantum matter. Fracton phases are characterized by elementary excitations (fractons) with restricted mobility. The hydrodynamic…

强关联电子 · 物理学 2020-07-29 Andrey Gromov , Andrew Lucas , Rahul M. Nandkishore

The nonequilibrium dynamics of vortices in 2D quantum fluids can be predicted by accounting for the way in which vortex ellipticity is coupled to the gradient in background fluid density. In the absence of nonlinear interactions, a…

量子气体 · 物理学 2021-10-27 Chuanzhou Zhu , Mark E. Siemens , Mark T. Lusk

We investigate the stability criterions for perfect fluid in $f(R)$ theories which is an important generalization of general relativity. Firstly, using Wald's general variation principle, we recast Seifert's work and obtain the dynamical…

广义相对论与量子宇宙学 · 物理学 2018-08-29 Xiongjun Fang , Xiaokai He , Jiliang Jing

We develop a purely hydrodynamic formalism to describe collisional, anisotropic instabilities in a relativistic plasma, that are usually described with kinetic theory tools. Our main motivation is the fact that coarse-grained models of high…

高能物理 - 唯象学 · 物理学 2017-01-04 Esteban Calzetta , Alejandra Kandus

We use the entropy method to analyze the nonlinear dynamics and stability of a continuum kinetic model of an active nematic suspension. From the time evolution of the relative entropy -- an energy-like quantity in the kinetic model -- we…

软凝聚态物质 · 物理学 2024-06-05 Scott Weady

We investigate a lattice model representing a granular gas in a thin channel. We deduce the hydrodynamic description for the model from the microscopic dynamics in the large system limit, including the lowest finite-size corrections. The…

软凝聚态物质 · 物理学 2018-06-19 A. Baldassarri , A. Puglisi , A. Prados

We present the full thermodynamics of a fluid confined by an arbitrary external potential based on the virial expansion of the grand potential. The fluid may be classical or quantum and it is assumed that interatomic interactions are…

统计力学 · 物理学 2008-08-13 Nadia Sandoval-Figueroa , Víctor Romero-Rochín

Hydrodynamics is a general theoretical framework for describing the long-time large-distance behaviors of various macroscopic physical systems, with its equations based on conservation laws such as energy-momentum conservation and charge…

核理论 · 物理学 2022-12-06 Duan She , Anping Huang , Defu Hou , Jinfeng Liao

The search for the QCD critical point in heavy-ion collision experiments requires dynamical simulations of the bulk evolution of QCD matter as well as of fluctuations. We consider two essential ingredients of such a simulation: a generic…

核理论 · 物理学 2018-08-15 M. Stephanov , Y. Yin