Transport coefficients in the Polyakov quark meson coupling model: A quasi particle approach
Abstract
We compute the transport coefficients, namely, the coefficients of shear and bulk viscosities as well as thermal conductivity for hot and dense matter. The calculations are performed within the Polyakov loop extended quark meson model. The estimation of the transport coefficients is made using the Boltzmann kinetic equation within the relaxation time approximation. The energy dependent relaxation time is estimated from meson meson scattering, quark meson scattering and quark quark scattering within the model. In our calculations, the shear viscosity to entropy ratio and the coefficient of thermal conductivity show a minimum at the critical temperature, while the ratio of bulk viscosity to entropy density exhibits a peak at this transition point. The effect of confinement modelled through a Polyakov loop potential plays an important role in the estimation of these dissipative coefficients both below and above the critical temperature.
Keywords
Cite
@article{arxiv.1801.04393,
title = {Transport coefficients in the Polyakov quark meson coupling model: A quasi particle approach},
author = {Aman Abhishek and Sabyasachi Ghosh and Hiranmaya Mishra},
journal= {arXiv preprint arXiv:1801.04393},
year = {2018}
}
Comments
To appear in Proceedings of Sciences, CPOD 2017. arXiv admin note: substantial text overlap with arXiv:1709.08013