Transport coefficients of hot and dense matter in relativistic heavy-ion collisions

TL;DR

This paper evaluates the transport coefficients of hot, dense matter in relativistic heavy-ion collisions, highlighting medium effects in quark-gluon plasma and hadronic media through quasiparticle models and thermal field theory.

Contribution

It introduces a comprehensive method to calculate transport coefficients considering medium modifications in both quark-gluon plasma and hadronic matter.

Findings

Transport coefficients significantly differ from vacuum estimates.

Medium effects alter the behavior of the quark-gluon plasma.

Thermal field theory captures in-medium self-energy corrections.

Abstract

The transport coefficients are known as the measure of system interactions, as well as the dynamical input of the hydrodynamic evolution equations of an expanding system created in the relativistic heavy ion collisions. In the current analysis, they have been evaluated for strongly interacting quark-gluon plasma system as well as hot hadronic media. The medium effects for an interacting QCD system have been introduced through a quasiparticle model. The same for a hadronic system has been captured via the in-medium self-energy correction using thermal field theory. The resulting behavior of the transport coefficients shows significant modification with respect to the estimations made in vacuum or using ideal equation of state.