Kinetic equations and anisotropic hydrodynamics for quark and gluon fluids

TL;DR

This paper investigates quark and gluon fluids using kinetic equations and anisotropic hydrodynamics, highlighting the effects of quark mass, baryon density, and quantum statistics, with strong agreement between theory and simulations.

Contribution

It introduces a detailed kinetic-theory analysis of quark-gluon mixtures and compares it with anisotropic hydrodynamics, demonstrating their consistency in a boost-invariant setting.

Findings

Good agreement between kinetic theory and hydrodynamics

Finite quark mass and baryon density effects are significant

Quantum statistics influence fluid behavior

Abstract

The mixture of quark and gluon fluids is studied in a one-dimensional boost-invariant setup using the set of relativistic kinetic equations treated in the relaxation time approximation. Effects of a finite quark mass, non-zero baryon number density, and quantum statistics are discussed. Comparisons between the exact kinetic-theory results and anisotropic hydrodynamics predictions are performed and a very good agreement between the two are found.