The quark viscosity in the quark–gluon plasma is evaluated in the hard thermal loop (HTL) approximation. The different contributions to the viscosity arising from the various components of the quark spectral function are discussed. The calculation is extended to finite values of the chemical potential.
Viscosity over entropy ratio in a quark plasma
ALBERICO, Wanda Maria;HANSEN, HUBERT;MOLINARI, Alfredo;NARDI, Marzia
2009-01-01
Abstract
The quark viscosity in the quark–gluon plasma is evaluated in the hard thermal loop (HTL) approximation. The different contributions to the viscosity arising from the various components of the quark spectral function are discussed. The calculation is extended to finite values of the chemical potential.
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