Relaxation time ansatz and shear and bulk viscosities of gluon matter
arXiv:1106.4734 · doi:10.1103/PhysRevC.84.035202
Abstract
Shear and bulk viscosity-to-entropy density ratios are calculated for the pure gluon matter in a non-equilibrium mean-field quasiparticle approach within the relaxation time approximation. We study how different approximations used in the literature affect the results for the shear and bulk viscosities. Though the results for the shear viscosity turned out to be quite robust, all evaluations of the shear and bulk viscosities obtained in the framework of the relaxation time approximation can be considered only as rough estimations.
9 pages, 3 figures
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- Quasiparticle Theory of Transport Coefficients for Hadronic Matter at Finite Temperature and Baryon Density
- Shear viscosity from Kubo formalism: NJL-model study
- SU(3) Polyakov linear-sigma model: Conductivity and viscous properties of QCD matter in thermal medium
- Quark Flavour Dependence of the Shear Viscosity in a Quasiparticle Model
- Structure formation during phase transitions in strongly interacting matter
- Remarks concerning bulk viscosity of hadron matter in relaxation time ansatz