Development of relativistic shock waves in viscous gluon matter

Details Development of relativistic shock waves in viscous gluon matter Development of relativistic shock waves in viscous gluon matter

2009-07-26

arxiv.org/abs/0907.4519v2

Nucl.Phys.A830:741c-744c,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 figures - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennessee

Scientific paper

10.1016/j.nuclphysa.2009.10.121

To investigate the formation and the propagation of relativistic shock waves in viscous gluon matter we solve the relativistic Riemann problem using a microscopic parton cascade. We demonstrate the transition from ideal to viscous shock waves by varying the shear viscosity to entropy density ratio $\eta/s$. We show that an $\eta/s$ ratio larger than 0.2 prevents the development of well-defined shock waves on time scales typical for ultrarelativistic heavy-ion collisions. These findings are confirmed by viscous hydrodynamic calculations.

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