Causal Viscous Hydrodynamics for Central Heavy-Ion Collisions

Details Causal Viscous Hydrodynamics for Central Heavy-Ion Collisions Causal Viscous Hydrodynamics for Central Heavy-Ion Collisions

2006-10-26

arxiv.org/abs/nucl-th/0610108v2

Eur.Phys.J.C51:677-687,2007

Physics

Nuclear Physics

Nuclear Theory

15 pages, 10 figures, revtex4; v2: bug corrected, minor changes in results; sec IV.B. modified due to referee report

Scientific paper

10.1140/epjc/s10052-007-0308-5

We study causal viscous hydrodynamics in the context of central relativistic heavy-ion collisions and provide details of a straightforward numerical algorithm to solve the hydrodynamic equations. It is shown that correlation functions of fluctuations provide stringent test cases for any such numerical algorithm. Passing these tests, we study the effects of viscosity on the temperature profile in central heavy-ion collisions. Also, we find that it is possible to counter-act the effects of viscosity to some extent by re-adjusting the initial conditions. However, viscous corrections are strongest for high-mass particles, signaling the breakdown of hydrodynamic descriptions for large eta/s.

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