Extraction of shear viscosity in stationary states of relativistic particle systems.

Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, Max-von-Laue-Strasse 1, DE-60438 Frankfurt am Main, Germany.
Physical Review E (Impact Factor: 2.33). 02/2012; 85(2 Pt 2):026302. DOI: 10.1103/PhysRevE.85.026302
Source: PubMed

ABSTRACT Starting from a classical picture of shear viscosity we construct a stationary velocity gradient in a microscopic parton cascade. Employing the Navier-Stokes ansatz we extract the shear viscosity coefficient η. For elastic isotropic scatterings we find an excellent agreement with the analytic values. This confirms the applicability of this method. Furthermore, for both elastic and inelastic scatterings with pQCD based cross sections we extract the shear viscosity coefficient η for a pure gluonic system and find a good agreement with already published calculations.

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