PoS - Proceedings of Science
Volume 311 - Critical Point and Onset of Deconfinement (CPOD2017) - Parallel Session III
Transport coefficients in Polyakov loop quark meson coupling model: a quasiparticle approach
H. Mishra*, A. Abhishek and S. Ghosh
Full text: pdf
Pre-published on: January 16, 2018
Published on: January 22, 2018
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. 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 modeled through a Polyakov loop potential plays an important role in the estimation of these dissipative coefficients
both below and above the critical temperature.
DOI: https://doi.org/10.22323/1.311.0080
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