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Non-additive generalisation of relativistic anisotropic anisotropic hydrodynamics is described. In the particular case of 0+1 boost-invariant hydrodynamics additional entropy production due to non-additivity is calculated.

核理论 · 物理学 2021-05-12 A. V. Leonidov

We present a coupled Boltzmann and hydrodynamics approach to relativistic heavy ion reactions. This hybrid approach is based on the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) transport approach with an intermediate hydrodynamical…

高能物理 - 唯象学 · 物理学 2008-06-12 Hannah Petersen , Jan Steinheimer , Qingfeng Li , Gerhard Burau , Marcus Bleicher

Decorrelation of the elliptic flow in rapidity is calculated within a hybrid approach which includes event-by-event viscous fluid dynamics and final state hadronic cascade model. The simulations are performed for Au+Au collisions at…

A kinetic equation which combines the quasiparticle drift of Landau's equation with a dissipation governed by a nonlocal and noninstantaneous scattering integral in the spirit of Enskog corrections is discussed. Numerical values of the…

核理论 · 物理学 2009-10-31 Klaus Morawetz , Pavel Lipavský , Václav Špička

In this article, we outline the modeling of a realistic dynamical model for comprehensive description of high energy heavy ion collisions. Comparing theoretical calculations and experimental data at RHIC, we give detailed discussions on the…

核理论 · 物理学 2012-07-10 Chiho Nonaka , Masayuki Asakawa

A recently obtained set of the equations for leading-order (3+1)D anisotropic hydrodynamics is tested against exact solutions of the Boltzmann equation with the collisional kernel treated in the relaxation time approximation. In order to…

高能物理 - 唯象学 · 物理学 2016-01-20 Leonardo Tinti , Radoslaw Ryblewski , Wojciech Florkowski , Michael Strickland

We show that by requiring positivity of the longitudinal pressure it is possible to constrain the initial conditions one can use in 2nd-order viscous hydrodynamical simulations of ultrarelativistic heavy-ion collisions. We demonstrate this…

高能物理 - 唯象学 · 物理学 2009-09-09 Mauricio Martinez , Michael Strickland

We numerically solve 2+1D effective kinetic theory of weak coupling QCD under longitudinal expansion relevant for early stages of heavy-ion collisions. We find agreement with viscous hydrodynamics and classical Yang-Mills simulations in the…

高能物理 - 唯象学 · 物理学 2015-11-04 Aleksi Kurkela , Yan Zhu

Shock wave solutions in anisotropic relativistic hydrodynamics are considered. A new phenomenon of anisotropy-related angular deflection of the incident flow by the shock wave front is described. Patterns of velocity and momentum…

核理论 · 物理学 2022-05-18 Aleksandr Kovalenko , Andrey Leonidov

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

A model for energy, pressure and flow velocity distributions at the beginning of relativistic heavy ion collisions is presented, which can be used as initial condition for hydrodynamical calculations. The results show that QGP forms a…

核理论 · 物理学 2007-05-23 V. K. Magas , L. P. Csernai , D. Strottman

Relativistic hydrodynamics of classic plasmas is derived from the microscopic model in the limit of ideal plasmas. The chain of equations is constructed step by step starting from the concentration evolution. It happens that the energy…

等离子体物理 · 物理学 2023-08-09 Pavel A. Andreev

Hydrodynamics is applied to describe the dynamics of relativistic heavy-ion collisions. The focus of the present study is the influence of a possible (phase) transition to the quark-gluon plasma in the nuclear matter equation of state on…

核理论 · 物理学 2009-10-30 Dirk H. Rischke

The principal component analysis of flow correlations in heavy-ion collisions is studied. The correlation matrix of harmonic flow is generalized to correlations involving several different flow vectors. The method can be applied to study…

核理论 · 物理学 2018-03-14 Piotr Bozek

One of the long-standing problems in the field of high-energy heavy-ion collisions is that the dynamical models based on viscous hydrodynamics fail to describe the experimental elliptic flow $v_2$ and the triangular flow $v_3$…

核理论 · 物理学 2023-05-31 Kenshi Kuroki , Azumi Sakai , Koichi Murase , Tetsufumi Hirano

We propose a differential hydrodynamic response relation, $V_2(\zeta)=\int d\xi G(\zeta-\xi) \mathcal{E}_2(\xi)$, to describe the formation of a pseudorapidity dependent elliptic flow in heavy-ion collisions, in response to a fluctuating…

核理论 · 物理学 2020-01-31 Hui Li , Li Yan

Diffuse accretion flows near a supermassive black hole are fundamentally weakly collisional. In such weakly collisional plasmas, the ion and electron distribution functions can deviate significantly from thermal equilibrium, and particle…

高能天体物理现象 · 物理学 2026-04-08 Abhishek Hegade K. R. , James M. Stone

During the past decades the study of strongly interacting fluids experienced a tremendous progress. In the relativistic heavy ion accelerators, specially the RHIC and LHC colliders, it became possible to study not only fluids made of…

核理论 · 物理学 2013-09-09 D. A. Fogaça , F. S. Navarra , L. G. Ferreira Filho

We consider the relativistic hydrodynamics of non-perfect fluids with the goal of determining a formulation that is suited for numerical integration in special-relativistic and general-relativistic scenarios. To this end, we review the…

广义相对论与量子宇宙学 · 物理学 2023-02-27 Michail Chabanov , Luciano Rezzolla , Dirk H. Rischke

We briefly discuss the recent developments in causal dissipative hydrodynamic for relativistic heavy ion collisions. Phenomenological estimate of QGP viscosity over entropy ratio from several experimental data, e.g. STAR's $\phi$ meson…

核理论 · 物理学 2015-03-17 A. K. Chaudhuri
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