Anisotropic-hydrodynamics approach to a quark-gluon fluid mixture

TL;DR

This paper develops an anisotropic-hydrodynamics model for quark-gluon mixtures, incorporating quantum effects, quark mass, and baryon density, and validates it against kinetic theory solutions.

Contribution

It introduces a comprehensive anisotropic-hydrodynamics framework for quark-gluon fluids that accounts for quantum statistics, mass, and baryon density, with validation against kinetic theory.

Findings

Hydrodynamics results agree well with kinetic theory

Quantum statistics and finite mass effects are significant

Model accurately describes quark-gluon fluid dynamics

Abstract

Anisotropic-hydrodynamics framework is used to describe a mixture of quark and gluon fluids. The effects of quantum statistics, finite quark mass, and finite baryon number density are taken into account. The results of anisotropic hydrodynamics are compared with exact solutions of the coupled kinetic equations for quarks and gluons in the relaxation time approximation. The overall very good agreement between the hydrodynamic and kinetic-theory results is found.