Transport properties of the strongly interacting quark-gluon plasma

TL;DR

This paper explores the transport properties of the strongly interacting quark-gluon plasma by analyzing elastic and radiative processes within a non-perturbative QCD model aligned with lattice QCD results.

Contribution

It provides a detailed comparison of radiative and elastic scattering processes and their impact on transport coefficients in the sQGP using the effective DQPM model.

Findings

Radiative cross sections depend on energy and temperature similarly to elastic ones.

Interaction rates and relaxation times differ significantly between radiative and elastic scatterings.

The jet transport coefficient $t$ varies with the strong coupling choice in different vertices.

Abstract

We investigate the transport properties of the strongly interacting quark-gluon plasma (sQGP) by comparing the role of elastic and inelastic (radiative) processes in the sQGP medium within the effective dynamical quasi-particle model (DQPM), constructed for the description of non-perturbative quantum chromodynamic (QCD) phenomena of the sQGP in line with the lattice QCD (lQCD) equation of state. First, we present the results for the energy and temperature dependencies of the total radiative cross sections and compare them to the corresponding elastic cross sections. Second, we perform a calculation of the interaction rate and relaxation time of radiative versus elastic scatterings. Finally, we obtain the jet transport coefficient $\hat{q}$ and investigate its dependence on the choice of the strong coupling in thermal, jet parton and radiative vertices.