• Open Access

Transport coefficients in the Polyakov quark meson coupling model: A relaxation time approximation

Aman Abhishek, Hiranmaya Mishra, and Sabyasachi Ghosh
Phys. Rev. D 97, 014005 – Published 12 January 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 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 modeled through a Polyakov loop potential plays an important role both below and above the critical temperature.

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  • Received 4 October 2017

DOI:https://doi.org/10.1103/PhysRevD.97.014005

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Nuclear PhysicsParticles & Fields

Authors & Affiliations

Aman Abhishek1,2,* and Hiranmaya Mishra1,†

  • 1Theory Division, Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, India
  • 2Indian Institute of Technology Gandhinagar, Gandhinagar 382355, Gujarat, India

Sabyasachi Ghosh3

  • 3Department of Physics, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India

  • *aman@prl.res.in
  • hm@prl.res.in

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Vol. 97, Iss. 1 — 1 January 2018

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