Shear and bulk viscosities for pure glue matter

A. S. Khvorostukhin, V. D. Toneev, and D. N. Voskresensky
Phys. Rev. C 83, 035204 – Published 31 March 2011

Abstract

Shear η and bulk ζ viscosities are calculated in a quasiparticle model within a relaxation-time approximation for pure gluon matter. Below Tc, the confined sector is described within a quasiparticle glueball model. The constructed equation of state reproduces the first-order phase transition for the glue matter. It is shown that with this equation of state, it is possible to describe the temperature dependence of the shear viscosity to entropy ratio η/s and the bulk viscosity to entropy ratio ζ/s in reasonable agreement with available lattice data, but absolute values of the ζ/s ratio underestimate the upper limits of this ratio in the lattice measurements typically by an order of magnitude.

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  • Received 8 November 2010

DOI:https://doi.org/10.1103/PhysRevC.83.035204

©2011 American Physical Society

Authors & Affiliations

A. S. Khvorostukhin1,2,3, V. D. Toneev1,2, and D. N. Voskresensky1,4

  • 1GSI, Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, D-64291 Darmstadt, Germany
  • 2Joint Institute for Nuclear Research, 141980 Dubna, Russia
  • 3Institute of Applied Physics, Moldova Academy of Science, MD-2028 Kishineu, Moldova
  • 4National Research Nuclear University “MEPhI,” Kashirskoe sh. 31, Moscow 115409, Russia

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Vol. 83, Iss. 3 — March 2011

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