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We present new analytic solutions to the relativistic Boltzmann equation within the relaxation time approximation. We first obtain spherically expanding solutions which are the kinetic counterparts of the exact solutions of the…

高能物理 - 理论 · 物理学 2015-04-22 Yoshitaka Hatta , Mauricio Martinez , Bo-Wen Xiao

Hydrodynamics can be formulated as the gradient expansion of conserved currents in terms of the fundamental fields describing the near-equilibrium fluid flow. In the relativistic case, the Navier-Stokes equations follow from the…

高能物理 - 理论 · 物理学 2017-10-06 Sašo Grozdanov , Nikolaos Kaplis

The motion of water is governed by the Navier-Stokes equations, which are complemented by the continuity equation to ensure local mass conservation. In this work, we construct the relativistic generalization of these equations through a…

高能物理 - 理论 · 物理学 2023-12-07 Saulo M. Diles , Alex S. Miranda , Luis A. H. Mamani , Alex M. Echemendia , Vilson T. Zanchin

We construct a relativistic model for bulk viscosity and heat conduction in a superfluid. Building on the principles of Unified Extended Irreversible Thermodynamics, the model is derived from Carter's multifluid approach for a theory with 3…

广义相对论与量子宇宙学 · 物理学 2022-02-23 Lorenzo Gavassino , Marco Antonelli , Brynmor Haskell

We study the GENERIC hydrodynamic theory for relativistic liquids formulated by Ottinger and collaborators. We use the maximum entropy principle to derive its conditions for linear stability (in an arbitrary reference frame) and for…

广义相对论与量子宇宙学 · 物理学 2023-03-16 Lorenzo Gavassino , Marco Antonelli

We discuss some open problems in hydrodynamical approach to the relativistic heavy ion collisions. In particular, we propose a new, very simple alternative approach to the relativistic dissipative hydrodynamics of Israel and Stewart.

高能物理 - 唯象学 · 物理学 2008-11-26 T. Kodama , T. Koide , G. S. Denicol , Ph. Mota

The matter created in relativistic heavy ion collisions is fairly well described by ideal hydrodynamics, and somewhat better described by viscous hydrodynamics. To this point, most viscous calculations have been two-dimensional, based on an…

核理论 · 物理学 2015-06-04 Joshua Vredevoogd , Scott Pratt

Based on the exact solution of Boltzmann kinetic equation in the relaxation-time approximation, the precision of the two most recent formulations of relativistic second-order non-conformal viscous hydrodynamics (14-moment approximation and…

核理论 · 物理学 2015-06-11 Radoslaw Ryblewski

The equations of relativistic hydrodynamics are transformed so that steps forward in time preserves local simultaneity. In these variables, the space-time coordinates of neighboring points on the mesh are simultaneous according to co-moving…

核理论 · 物理学 2008-11-26 Scott Pratt

In this work we simulate a viscous hydrodynamical model of non-central Au-Au collisions in 2+1 dimensions, assuming longitudinal boost invariance. The model fluid equations were proposed by \"{O}ttinger and Grmela \cite{OG}. Freezeout is…

核理论 · 物理学 2010-04-06 K. Dusling , D. Teaney

We derive deterministic equations for the evolution of non-Gaussian fluctuations in relativistic stochastic hydrodynamics. This is achieved by defining the average local Landau frame and corresponding fluctuating hydrodynamic variables.…

核理论 · 物理学 2026-04-16 Xin An , Gokce Basar , Mikhail Stephanov

In this article, we model Earth's lower small-scale eddies motion in the atmosphere as a compressible neutral fluid flow on a rotating sphere. To justify the model, we carried out a numerical computation of the thermodynamic and…

流体动力学 · 物理学 2024-09-04 Admasu Abawari , Yitagesu Elfaged

Following the procedure introduced by Israel and Stewart, we expand the entropy current up to the third order in the shear stress tensor $\pi^{\alpha\beta}$ and derive a novel third-order evolution equation for $\pi^{\alpha\beta}$. This…

高能物理 - 唯象学 · 物理学 2010-07-06 A. El , Z. Xu , C. Greiner

A detailed study is carried out for the relativistic theory of viscoelasticity which was recently constructed on the basis of Onsager's linear nonequilibrium thermodynamics. After rederiving the theory using a local argument with the…

统计力学 · 物理学 2015-03-19 Masafumi Fukuma , Yuho Sakatani

We show that the recently formulated causal and stable first-order hydrodynamics has the same dynamics as Israel-Stewart theory for boost-invariant, Bjorken expanding systems with a conformal equation of state and a regulating sector…

核理论 · 物理学 2020-06-03 Arpan Das , Wojciech Florkowski , Jorge Noronha , Radoslaw Ryblewski

We prove that Einstein's equations coupled to equations of Israel-Stewart-type, describing the dynamics of a relativistic fluid with bulk viscosity and nonzero baryon charge (without shear viscosity or baryon diffusion) dynamically coupled…

广义相对论与量子宇宙学 · 物理学 2019-07-03 Fabio S. Bemfica , Marcelo M. Disconzi , Jorge Noronha

Relativistic fluids are Lorentz invariant, and a non-relativistic limit of such fluids leads to the well-known Navier-Stokes equation. However, for fluids moving with respect to a reference system, or in critical systems with generic…

高能物理 - 理论 · 物理学 2018-08-15 Jan de Boer , Jelle Hartong , Niels A. Obers , Watse Sybesma , Stefan Vandoren

We extended our formulation of causal dissipative hydrodynamics [T. Koide \textit{et al.}, Phys. Rev. \textbf{C75}, 034909 (2007)] to be applicable to the ultra-relativistic regime by considering the extensiveness of irreversible currents.…

高能物理 - 唯象学 · 物理学 2009-11-13 G. S. Denicol , T. Kodama , T. Koide , Ph. Mota

In this article we report a novel analytic solution for a cosmological model with a matter content described by a one component dissipative fluid, in the framework of the causal Israel-Stewart theory. Some physically well motivated…

广义相对论与量子宇宙学 · 物理学 2019-08-15 Norman Cruz , Esteban González , Guillermo Palma

We consider the hydrodynamics of relativistic conformal field theories at finite temperature. We show that the limit of slow motions of the ideal hydrodynamics leads to the non-relativistic incompressible Euler equation. For viscous…

高能物理 - 理论 · 物理学 2009-01-14 Itzhak Fouxon , Yaron Oz