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Heat transport in spin-boson systems near the thermal equilibrium is systematically investigated. An asymptotically exact expression for the thermal conductance in a low-temperature regime wherein transport is described via a co-tunneling…

介观与纳米尺度物理 · 物理学 2018-09-14 Tsuyoshi Yamamoto , Masanari Kato , Takeo Kato , Keiji Saito

An Enskog-Landau kinetic equation for a many-component system of charged hard spheres is proposed. It has been obtained from the Liouville equation with modified boundary conditions by the method of nonequilibrium statistical operator. On…

等离子体物理 · 物理学 2007-05-23 A. E. Kobryn , I. P. Omelyan , M. V. Tokarchuk

Using a finite-temperature Path Integral Monte Carlo simulation (PIMC) method and finite-size scaling, we have investigated the interaction-induced shift of the phase transition temperature for Bose-Einstein condensation of homogeneous…

统计力学 · 物理学 2009-11-10 Kwangsik Nho , D. P. Landau

The Navier-Stokes transport coefficients for a granular gas of smooth inelastic hard disks or spheres are determined from the inelastic Boltzmann equation by means of Grad's moment method. The shear viscosity $\eta$, the thermal…

统计力学 · 物理学 2015-06-12 V. Garzó

We calculate in this work the Navier-Stokes transport coefficients from the Boltzmann equation for $d$-dimensional inelastic Maxwell models. By granular gas we mean here a low density system of identical spheres that lose a fraction of…

统计力学 · 物理学 2015-06-18 Moisés G. Chamorro , Vicente Garzó , Francisco Vega Reyes

We study the transport properties of strongly interacting matter in the context of ultrarelativistic heavy ion collision experiments. We calculate the transport coefficients viz. shear viscosity ($\eta$) and electrical conductivity…

高能物理 - 唯象学 · 物理学 2017-06-01 Lata Thakur , P. K. Srivastava , Guru Prakash Kadam , Manu George , Hiranmaya Mishra

We estimate various transport coefficients of hot and dense hadronic matter in the presence of magnetic field. The estimation is done through solutions of the relativistic Boltzmann transport equation in the relaxation time approximation.We…

高能物理 - 唯象学 · 物理学 2019-12-11 Arpan Das , Hiranmaya Mishra , Ranjita K. Mohapatra

The transport approach is a useful tool to study dynamics of non-equilibrium systems. For heavy-ion collisions at intermediate energies, where both the smooth nucleon potential and the hard-core nucleon-nucleon collision are important, the…

核理论 · 物理学 2019-04-02 Jun Xu

The Boltzmann kinetic equation is considered to compute the transport coefficients associated with the mass flux of intruders in a granular gas. Intruders and granular gas are immersed in a gas of elastic hard spheres (molecular gas). We…

软凝聚态物质 · 物理学 2025-11-07 Rubén Gómez González , Vicente Garzó

The mass flux of a low-density granular binary mixture obtained previously by solving the Boltzmann equation by means of the Chapman-Enskog method is considered further. As in the elastic case, the associated transport coefficients $D$,…

统计力学 · 物理学 2013-06-27 Vicente Garzó , J. Aaron Murray , Francisco Vega Reyes

Recent experiments in hybrid-quantum systems facilitate the potential realization of one of the most fundamental interacting Hamiltonian-Reservoir system, namely, the single-site Bose-Hubbard model coupled to two reservoirs at different…

量子物理 · 物理学 2017-01-02 Archak Purkayastha , Abhishek Dhar , Manas Kulkarni

In this paper we discuss the analytical properties of the binary collision integral for a gas of ultrarelativistic particles interacting via a constant cross-section. Starting from a near-equilibrium expansion over a complete basis of…

流体动力学 · 物理学 2024-04-02 David Wagner , Victor E. Ambrus , Etele Molnar

The shift of the Bose-Einstein condensation temperature for a homogenous weakly interacting Bose gas in leading order in the scattering length `a' is computed for given particle density `n.' Variational perturbation theory is used to resum…

统计力学 · 物理学 2007-05-23 Boris Kastening

We derive the transport coefficients of second-order fluid dynamics with $14$ dynamical moments using the method of moments and the Chapman-Enskog method in the relaxation-time approximation for the collision integral of the relativistic…

核理论 · 物理学 2022-10-18 Victor E. Ambrus , Etele Molnár , Dirk H. Rischke

We study the thermodynamic and transport properties of hot and dense quantum chromodynamic matter expected to be produced in low-energy heavy-ion collisions, using three different effective quantum chromodynamic frameworks: the…

The Maxwell approach from electrostatics is applied for calculation of transport coefficients in composites. The viscosity of a dilute emulsion is obtained as a function of the volume fraction of dispersed phase. The derived new formula is…

软凝聚态物质 · 物理学 2011-12-19 K. Dimitrov , B. Radoev , R. Tsekov

A new formalism to describe steady-state electronic and thermal transport in the framework of density functional theory is presented. A one-to-one correspondence is proven between the three basic variables of the theory, i.e., the density…

介观与纳米尺度物理 · 物理学 2022-04-26 Nahual Sobrino , Florian Eich , Gianluca Stefanucci , Roberto D'Agosta , Stefan Kurth

We review a recently developed formalism for computing thermoelectric coefficients in correlated matter. The usual difficulties of such a calculation are circumvented by a careful generalization the transport formalism to finite…

强关联电子 · 物理学 2026-01-14 B Sriram Shastry

The steps essentially involved in the evaluation of transport coefficients in linear response theory using Kubo formulas are to relate the defining {\em retarded} correlation function to the corresponding {\em time-ordered} one and to…

核理论 · 物理学 2013-08-09 Sourav Sarkar

Equilibrium molecular dynamics simulation and the Green-Kubo formalism were used to calculate self-diffusion coefficient, shear viscosity,and thermal conductivity for 30 different quadrupolar two-center Lennard-Jones fluids along the bubble…

化学物理 · 物理学 2009-06-18 G. A. Fernandez , J. Vrabec , H. Hasse