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Article
Report number	arXiv:0806.0352 ; CERN-PH-TH-2008-119 ; CERN-PH-TH-2008-119
Title	Causal relativistic hydrodynamics for viscous fluids
Author(s)	Heinz, Ulrich W. (Ohio State U. ; CERN) ; Song, Huichao (Ohio State U.)
Publication	2008
Imprint	03 Jun 2008
Number of pages	4
Note	4 pages, 1 figure. Contribution to the Proceedings for Quark Matter 2008, Jaipur, India, Feb. 3-10, 2008, to appear in a special issue of J. Phys. G. Version 2: CERN preprint number corrected and Fig. 1 (right panel) recalculated using full Israel-Stewart equations (see text)
In:	10.1088/0954-3899/35/10/104126
In:	20th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions, Jaipur, India, 04 - 10 Feb 2008, pp.104126
DOI	10.1088/0954-3899/35/10/104126
Subject category	Nuclear Physics - Theory
Abstract	We report on recent results from VISH2+1, a code that solves the relativistic Israel-Stewart equations for causal viscous hydrodynamics for heavy-ion collisions with longitudinal boost invariance. We find that even ``minimal'' shear viscosity eta/s=hbar/(4pi) leads to a large reduction of elliptic flow compared to ideal fluid dynamics. We explore systematically the sensitivity of this reduction to the equation of state, system size, initial conditions, and the microscopic relaxation time in different formulations of the Israel-Stewart equations.

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