Viscosities of the quasigluon plasma
M. Bluhm (SUBATECH Nantes), B. Kampfer (Forschungszentrum, Dresden-Rossendorf & Dresden, Tech. U.), K. Redlich (Wroclaw U.)
TL;DR
This paper studies the bulk and shear viscosities of the gluon plasma using an effective kinetic theory with quasigluon excitations, finding results consistent with lattice QCD data.
Contribution
It introduces a quasigluon-based kinetic model with temperature-dependent self-energies to compute transport coefficients of the gluon plasma.
Findings
Temperature dependence of viscosities matches lattice QCD results
Impact of quasigluon dispersion relation on shear viscosity analyzed
Provides insights into gluon plasma transport properties
Abstract
We investigate bulk and shear viscosities of the gluon plasma within relaxation time approximation to an effective Boltzmann-Vlasov type kinetic theory by viewing the plasma as describable in terms of quasigluon excitations with temperature dependent self-energies. The found temperature dependence of the transport coefficients agrees fairly well with available lattice QCD results. The impact of some details in the quasigluon dispersion relation on the specific shear viscosity is discussed.
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