Applications of dissipative and anisotropic hydrodynamics in description of early stages of relativistic heavy-ion collisions

TL;DR

This paper discusses kinetic and hydrodynamic models for the early stages of relativistic heavy-ion collisions, highlighting the importance of shear-bulk coupling in accurately modeling bulk viscous pressure evolution.

Contribution

It introduces the significance of shear-bulk coupling in dissipative hydrodynamics for better description of early collision dynamics.

Findings

Shear-bulk coupling affects bulk viscous pressure evolution.

Hydrodynamic models are improved by incorporating anisotropic effects.

Kinetic models complement hydrodynamic descriptions.

Abstract

Kinetic and hydrodynamic models describing early stages of relativistic heavy-ion collisions are discussed. We emphasise the role of the shear-bulk coupling for the correct determination of the time dependence of the bulk viscous pressure.