Dynamical equilibration in strongly-interacting parton-hadron matter

TL;DR

This paper investigates how strongly-interacting parton-hadron matter reaches equilibrium using a transport model aligned with lattice-QCD results, focusing on dynamical transitions between partonic and hadronic states.

Contribution

It introduces a dynamical transport approach that models kinetic and chemical equilibration in parton-hadron matter consistent with lattice-QCD thermodynamics.

Findings

Demonstrates dynamical transition from partonic to hadronic matter.

Analyzes different thermodynamical distributions of sQGP.

Provides insights into equilibration timescales and mechanisms.

Abstract

We study the kinetic and chemical equilibration in 'infinite' parton-hadron matter within the Parton-Hadron-String Dynamics transport approach, which is based on a dynamical quasiparticle model for partons matched to reproduce lattice-QCD results - including the partonic equation of state - in thermodynamic equilibrium. The 'infinite' matter is simulated within a cubic box with periodic boundary conditions initialized at different baryon density (or chemical potential) and energy density. The transition from initially pure partonic matter to hadronic degrees of freedom (or vice versa) occurs dynamically by interactions. Different thermodynamical distributions of the strongly-interacting quark-gluon plasma (sQGP) are addressed and discussed.