QCD Equilibrium and Dynamical Properties from Holographic Black Holes

TL;DR

This paper uses holographic black holes within a gravity/gauge framework to study the equilibrium and dynamical properties of a strongly coupled quark-gluon plasma, including transport coefficients and phase transition behavior.

Contribution

It introduces a holographic Einstein-Maxwell-Dilaton model constrained by lattice QCD data to analyze QCD thermodynamics and transport properties at finite density.

Findings

Computed baryon charge conductivity, viscosities, and equation of state.

Analyzed behavior of observables near the critical end point and phase transition line.

Provided insights into the thermodynamics of strongly coupled QCD matter.

Abstract

By using gravity/gauge correspondence, we employ an Einstein-Maxwell-Dilaton model to compute the equilibrium and out-of-equilibrium properties of a hot and baryon rich strongly coupled quark-gluon plasma. The family of 5-dimensional holographic black holes, which are constrained to mimic the lattice QCD equation of state at zero density, is used to investigate the temperature and baryon chemical potential dependence of the equation of state. We also obtained the baryon charge conductivity, and the bulk and shear viscosities with a particular focus on the behavior of these observables on top of the critical end point and the line of first order phase transition predicted by the model.