Viscosity and dissipation - early stages

Details Viscosity and dissipation - early stages Viscosity and dissipation - early stages

2009-01-15

arxiv.org/abs/0901.2272v1

Acta Phys.Polon.B40:987-992,2009

Physics

Nuclear Physics

Nuclear Theory

6 pages, WPCF 2008

Scientific paper

A very early start up time of the hydrodynamic evolution is needed in order to reproduce observations from relativistic heavy-ion collisions experiments. At such early times the systems is still not locally equilibrated. Another source of deviations from local equilibrium is the viscosity of the fluid. We study these effects at very early times to obtain a dynamical prescription for the transition from an early 2-dimensional expansion to a nearly equilibrated 3-dimensional expansion at latter stages. The role of viscosity at latter stages of the evolution is also illustrated.

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