Electrical Conductivity of Hot QCD Matter: A Color String Percolation Approach

Abstract

The study of the transport coefficients like shear viscosity, electrical conductivity, etc. of strongly interacting matter produced in heavy-ion collisions has gained interest in the current scenario. We have attempted to study some of these coefficients, and this work comprises the study of the normalized electrical conductivity (σel /T) of hot QCD matter as a function of temperature (T) using the Color String Percolation Model (CSPM). We also investigate the temperature dependence of shear viscosity and its ratio with electrical conductivity for the QCD matter. The σel /T in CSPM is showing a very weak dependence on the temperature. We compare CSPM results with those obtained in the Boltzmann Approach to Multi-Parton Scatterings (BAMPS) model, and a good agreement is found between CSPM results and predictions of BAMPS with a fixed strong coupling constant. © 2021, Springer Nature Singapore Pte Ltd.