Establishing the Range of Applicability of Hydrodynamics in High-Energy Collisions

被引：30

作者：

Ambrus, Victor E. ^{[1
]}

Schlichting, S. ^{[2
]}

Werthmann, C. ^{[2
,3
]}

机构：

[1] West Univ Timisoara, Dept Phys, Bulevardul Vasile Parvan 4, Timisoara 300223, Romania

[2] Univ Bielefeld, Fak Phys, D-33615 Bielefeld, Germany

[3] Univ Wroclaw, Ctr Simulat Superdense Fluids, Incubator Sci Excellence, Pl Maxa Borna 9, PL-50204 Wroclaw, Poland

来源：

PHYSICAL REVIEW LETTERS | 2023年 / 130卷 / 15期

关键词：

ANISOTROPIC-FLOW HARMONICS; PB COLLISIONS; VISCOSITY; MOMENTUM; BEHAVIOR; PP;

D O I：

10.1103/PhysRevLett.130.152301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We simulate the space-time dynamics of high-energy collisions based on a microscopic kinetic description in the conformal relaxation time approximation, in order to determine the range of applicability of an effective description in relativistic viscous hydrodynamics. We find that hydrodynamics provides a quantitatively accurate description of collective flow when the average inverse Reynolds number Re-1 is sufficiently small and the early preequilibrium stage is properly accounted for. We further discuss the implications of our findings for the (in)applicability of hydrodynamics in proton-proton, proton-nucleus, and light nucleus collisions.

引用

页数：7

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