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相关论文: Far-from-equilibrium attractor in non-conformal pl…

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We analyze the diffusion of a Brownian particle in a fluid under stationary flow. By using the scheme of non-equilibrium thermodynamics in phase space, we obtain the Fokker-Planck equation which is compared with others derived from kinetic…

统计力学 · 物理学 2016-08-16 I. Santamaría-Holek , D. Reguera , J. M. Rubí

We propose a new theory of second-order viscous relativistic hydrodynamics which does not impose any frame conditions on the choice of the hydrodynamic variables. It differs from Mueller-Israel-Stewart theory by including additional…

核理论 · 物理学 2022-07-26 Jorge Noronha , Michał Spaliński , Enrico Speranza

We investigate the non-linear transport processes and hydrodynamization of a system of gluons undergoing longitudinal boost-invariant expansion. The dynamics is described within the framework of the Boltzmann equation in the small-angle…

高能物理 - 唯象学 · 物理学 2021-03-24 A. Behtash , S. Kamata , M. Martinez , T. Schaefer , V. Skokov

We demonstrate how to match pre-equilibrium dynamics of a 0+1 dimensional quark gluon plasma to 2nd-order viscous hydrodynamical evolution. The matching allows us to specify the initial values of the energy density and shear tensor at the…

高能物理 - 唯象学 · 物理学 2014-11-20 Mauricio Martinez , Michael Strickland

We exploit the concept of hydrodynamic attractors to establish a general relation between the initial state energy and the produced particle multiplicities in high-energy nuclear collisions. When combined with an ab initio model of energy…

高能物理 - 唯象学 · 物理学 2021-01-01 Giuliano Giacalone , Aleksas Mazeliauskas , Sören Schlichting

We study the universal behavior associated with a Relativistic Boltzmann Transport (RBT) approach with the full collision integral in 0+1D conformal systems. We show that all momentum moments of the distribution function exhibit universal…

高能物理 - 唯象学 · 物理学 2023-11-21 Vincenzo Nugara , Salvatore Plumari , Lucia Oliva , Vincenzo Greco

We study the effect of external proper time-dependent longitudinal forces on the evolution of the distribution function using the Boltzmann Equation with a relaxation time collision kernel under Bjorken flow. We derive an exact solution and…

核理论 · 物理学 2023-11-27 Reghukrishnan Gangadharan , Ankit Kumar Panda , Victor Roy

Using a holographic method, we further investigate the relaxation towards the hydrodynamic regime of a boost-invariant non-Abelian plasma taken out-of-equilibrium. In the dual description, the system is driven out-of-equilibrium by boundary…

高能物理 - 唯象学 · 物理学 2015-06-23 L. Bellantuono , P. Colangelo , F. De Fazio , F. Giannuzzi

Complex fluids in shear flow and biased dynamics in crowded environments exhibit counterintuitive features which are difficult to address both at theoretical level and by molecular dynamic simulations. To understand some of these features…

软凝聚态物质 · 物理学 2012-09-19 Francesco Turci , Estelle Pitard , Mauro Sellitto

In this work we introduce the generic conditions for the existence of a non-equilibrium attractor that is an invariant manifold determined by the long-wavelength modes of the physical system. We investigate the topological properties of the…

高能物理 - 理论 · 物理学 2020-08-10 Alireza Behtash , Syo Kamata , Mauricio Martinez , Haosheng Shi

Hydro-kinetic theory of thermal fluctuations is applied to a non-conformal relativistic fluid. Solving the hydro-kinetic equations for an isotropically expanding background we find that hydrodynamic fluctuations give ultraviolet divergent…

核理论 · 物理学 2018-08-21 Yukinao Akamatsu , Aleksas Mazeliauskas , Derek Teaney

We demonstrate experimentally that the long-range hydrodynamic interactions in an incompressible quasi 2D isotropic fluid result in an anisotropic viscous drag acting on elongated particles. The anisotropy of the drag is increasing with…

流体动力学 · 物理学 2017-12-27 Christoph Klopp , Ralf Stannarius , Alexey Eremin

We extend previous studies of the conformal 0+1d kinetic non-equilibrium attractor in relaxation time approximation by enforcing number conservation through the introduction of a dynamical fugacity (chemical potential). We derive two…

高能物理 - 唯象学 · 物理学 2020-01-08 Michael Strickland , Ubaid Tantary

We introduce a schematic non-linear diffusion model where density fluctuations induce a rich out of equilibrium dynamics. The properties of the model are studied by numerical simulations and analytically in a mean field approximation. At…

统计力学 · 物理学 2008-07-03 Federico Corberi , Mario Nicodemi , Marina Piccioni , Antonio Coniglio

A longstanding goal of nonequilibrium statistical mechanics has been to extend the conceptual power of the Boltzmann distribution to driven systems. We report some new progress towards this goal. Instead of writing the nonequilibrium…

统计力学 · 物理学 2015-11-25 Robert Marsland , Jeremy England

In this article, we briefly review dynamical and thermodynamical aspects of different forms of quantum motors and quantum pumps. We then extend previous results to provide new theoretical tools for a systematic study of those phenomena at…

介观与纳米尺度物理 · 物理学 2019-08-26 Raúl A. Bustos-Marún , Hernan L. Calvo

Using molecular dynamics simulations, we have determined that the nature of dynamical heterogeneity in jammed liquids is very sensitive to short-ranged attractions. Weakly attractive systems differ little from dense hard-sphere and…

软凝聚态物质 · 物理学 2007-05-23 David R. Reichman , Eran Rabani , Phillip L. Geissler

We use the Hamiltonian formulation of kinetic theory to perform a stability analysis of non-thermal fixed points in a non-Abelian plasma. We construct a perturbative expansion of the Fokker-Planck collision kernel in an adiabatic…

高能物理 - 唯象学 · 物理学 2022-07-01 Aleksandr N. Mikheev , Aleksas Mazeliauskas , Jürgen Berges

The early dynamics in heavy-ion collisions involves a rapid, far from equilibrium evolution. This early pre-equilibrium stage of the dynamics can be modeled using kinetic equations. The effect of this pre-equilibrium stage on final…

核理论 · 物理学 2023-04-05 Piotr Bozek

Anisotropic hydrodynamics is a non-perturbative reorganization of relativistic hydrodynamics that takes into account the large momentum-space anisotropies generated in ultrarelativistic heavy-ion collisions. As a result, it allows one to…

核理论 · 物理学 2015-01-06 Michael Strickland