Non-boost-invariant motion of dissipative and highly anisotropic fluid

TL;DR

This paper uses anisotropic dissipative hydrodynamics to model non-boost-invariant fluid motion in heavy-ion collisions, demonstrating how entropy production reduces initial pressure asymmetries and leads to realistic isotropization scenarios.

Contribution

It extends previous anisotropic hydrodynamics models by incorporating a realistic equation of state for more accurate isotropization predictions.

Findings

Strong initial pressure asymmetries are reduced through entropy production.

The model reproduces realistic isotropization scenarios.

Inclusion of a realistic equation of state improves the model's applicability.

Abstract

The recently formulated framework of anisotropic and dissipative hydrodynamics (ADHYDRO) is used to describe non-boost-invariant motion of the fluid created at the early stages of heavy-ion collisions. Very strong initial asymmetries of pressure are reduced by the entropy production processes. By the appropriate choice of the form of the entropy source we can reproduce realistic scenarios for the isotropization expected in heavy-ion collisions. Our previous results are generalized by including the realistic equation of state as the limit of the isotropization processes.