Some aspects of QGP phase in a hQCD model

TL;DR

This paper explores the properties of quark-gluon plasma within a holographic QCD model, analyzing phenomena like drag force and phase transitions, and finds qualitative consistency with QCD expectations.

Contribution

It extends the holographic QCD model by examining QGP aspects such as phase transitions and transport properties under varying chemical potentials.

Findings

Existence of Hawking-Page phase transition at low chemical potential

Transport properties align qualitatively with QCD

Phase transition disappears beyond critical chemical potential

Abstract

We continue to study the holographic QCD (hQCD) model, proposed in a previous paper, in an Einstein-Maxwell-Dilaton (EMD) system. In this paper we discuss some aspects of quark gluon plasma (QGP) in the hQCD model, such as drag force, jet quenching parameter and screening length. The results turn out to be consistent with those as expected in QCD qualitatively. By calculating free energy of the background black hole solution, we find that there exists a Hawking-Page phase transition between small black hole and big black hole when chemical potential $\mu $ is less than a critical one $ \mu_c$, and the phase transition is absent when chemical potential is beyond the critical one.