Extracting the QGP viscosity from RHIC data -- a status report from viscous hydrodynamics
Nuclear Theory
2010-01-15 v2
Abstract
We report recent progress on causal viscous hydrodynamics for relativistic heavy ion collisions. For fixed specific shear viscosity eta/s, uncertainties in the elliptic flow arising from initial conditions, equation of state, bulk viscosity and numerical viscosity, and the treatment of the highly viscous hadronic stage and freeze-out procedure are analysed. A comparison of current viscous hydrodynamic results with experimental data yields a robust upper limit eta/s < 5/(4pi).
Cite
@article{arxiv.0812.4274,
title = {Extracting the QGP viscosity from RHIC data -- a status report from viscous hydrodynamics},
author = {Huichao Song and Ulrich W. Heinz},
journal= {arXiv preprint arXiv:0812.4274},
year = {2010}
}
Comments
8 pages, 3 figures, plenary talk at International Conference on Strangeness in Quark Matter 2008, Beijing, China, October 6-10, 2008; to appear in the proceedings published by J. Phys. G