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A 3-fluid hydrodynamic model for simulating relativistic heavy-ion collisions is introduced. Alongside with two baryon-rich fluids, the new model considers time-delayed evolution of a third, baryon-free (i.e. with zero net baryonic charge)…

核理论 · 物理学 2008-11-26 Yu. B. Ivanov , V. N. Russkikh , V. D. Toneev

Viscous relativistic hydrodynamics in 3+1 dimensions is applied to describe heavy ion collisions at RHIC and LHC. We present calculations of observables that are sensitive to the longitudinal structure of the created system. In particular…

核理论 · 物理学 2016-11-23 Gabriel Denicol , Akihiko Monnai , Sangwook Ryu , Bjoern Schenke

We utilize nonequilibrium covariant transport theory to determine the region of validity of causal Israel-Stewart dissipative hydrodynamics (IS) and Navier-Stokes theory (NS) for relativistic heavy ion physics applications. A massless ideal…

核理论 · 物理学 2009-02-18 Pasi Huovinen , Denes Molnar

We prove that there exists a weak solution to a system governing an unsteady flow of a viscoelastic fluid in three dimensions, for arbitrarily large time interval and data. The fluid is described by the incompressible Navier-Stokes…

偏微分方程分析 · 数学 2020-07-22 Michal Bathory , Miroslav Bulíček , Josef Málek

Magnetic field evolution in neutron star cores is not fully understood. We describe the field evolution both for one barotropic fluid as well as two collisionally coupled barotropic fluids with different density profiles using the anelastic…

高能天体物理现象 · 物理学 2025-12-16 Andrei Igoshev , Nicolás A. Moraga , Andreas Reisenegger , Calum S. Skene , Rainer Hollerbach

Motivated by the physics of the quark-gluon plasma created in heavy-ion collision experiments, we use holography to study the regime of applicability of various theories of relativistic viscous hydrodynamics. Using the microscopic…

高能物理 - 理论 · 物理学 2022-09-23 Hans Bantilan , Yago Bea , Pau Figueras

We explore theoretical uncertainties in the hydrodynamic description of relativistic heavy-ion collisions by examining the full non-linear causality conditions and quantifying the second-order transport coefficients' role on flow…

核理论 · 物理学 2021-06-09 Cheng Chiu , Chun Shen

In high energy heavy-ion collisions, the two colliding nuclei pass through each other leaving behind an almost baryon free central rapidity region. Most of the baryons are carried away by the nuclear remnants and are located in the…

核理论 · 物理学 2019-01-02 Ming Li , Chun Shen

The main features of a three dimensional, high-resolution special relativistic hydro code based on relativistic Riemann solvers are described. The capabilities and performance of the code are discussed. In particular, we present the results…

天体物理学 · 物理学 2009-10-31 M. A. Aloy , J. M. Ibanez , J. M. Marti , E. Muller

We numerically solve fully (3+1)-dimensional relativistic hydrodynamical equation with the baryon number conservation law. For realistic initial conditions we adopt the results from the event generator (URASiMA). Using this model we discuss…

核理论 · 物理学 2011-04-15 C. Nonaka , N. Sasaki , S. Muroya , O. Miyamura

In this era of precision cosmology, a detailed physical understanding on the evolution of cosmic baryons is required. Cosmic magnetic fields, though still poorly understood, may represent an important component in the global cosmic energy…

天体物理学 · 物理学 2015-06-24 Shengtai Li , Hui Li , Renyue Cen

We propose a novel numerical method for solving multi-dimensional, special relativistic Boltzmann equations for neutrinos coupled to hydrodynamics equations. It is meant to be applied to simulations of core-collapse supernovae. We handle…

高能天体物理现象 · 物理学 2015-06-22 Hiroki Nagakura , Kohsuke Sumiyoshi , Shoichi Yamada

In this work I develop a new framework for anisotropic hydrodynamics that generalizes the leading order of the hydrodynamic expansion to the full (3+1)-dimensional anisotropic massive case. Following previous works, my considerations are…

核理论 · 物理学 2015-07-29 Leonardo Tinti

Baryon number density perturbations offer a possible route to experimentally measure baryon number susceptibilities and heat conductivity of the quark gluon plasma. We study the fluid dynamical evolution of local and event-by-event…

核理论 · 物理学 2015-12-25 Stefan Floerchinger , Mauricio Martinez

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 study charge diffusion in relativistic resistive second-order dissipative magnetohydrodynamics. In this theory, charge diffusion is not simply given by the standard Navier-Stokes form of Ohm's law, but by an evolution equation which…

核理论 · 物理学 2023-03-15 Ashutosh Dash , Masoud Shokri , Luciano Rezzolla , Dirk H. Rischke

We derive the equations of motion of relativistic magnetohydrodynamics from the Boltzmann equation using the method of moments. We consider a locally electrically neutral system composed of two particle species with opposite charges, with…

高能天体物理现象 · 物理学 2026-02-25 Khwahish Kushwah , Gabriel Silveria Denicol

We describe a numerical method for calculating the (3+1) dimensional general relativistic hydrodynamics of a coalescing neutron-star binary system. The relativistic field equations are solved at each time slice with a spatial 3-metric…

广义相对论与量子宇宙学 · 物理学 2008-12-18 J. R. Wilson , G. J. Mathews , P. Marronetti

The baryon and energy densities attained in fragmentation regions in central Au+Au collisions in the energy range of the Beam Energy Scan (BES) program at the Relativistic Heavy-Ion Collider (RHIC) are estimated within the model of the…

核理论 · 物理学 2018-07-25 Yu. B. Ivanov , A. A. Soldatov

In this work, we explore a Bemfica--Disconzi--Noronha--Kovtun (BDNK)-type formulation of relativistic magnetohydrodynamics, providing a causal and stable first-order description of dissipative fluids. We derive coupled evolution equations…

核理论 · 物理学 2026-05-05 Ankit Kumar Panda , Rajesh Biswas