paper

Bulk viscosity effects on elliptic flow

arXiv:0907.4269 · doi:10.1016/j.nuclphysa.2009.10.119

Abstract

The effects of bulk viscosity on the elliptic flow $v_{2}$ are studied using realistic equation of state and realistic transport coefficients. We find that thebulk viscosity acts in a non trivial manner on $v_{2}$ . At low $p_{T}$ , the reduction of $v_{2}$ is even more effective compared to the case of shear viscosity, whereas at high $p_{T}$ , an enhancement of $v_{2}$ compared to the ideal case is observed. We argue that this is caused by the competition of the critical behavior of the equation of state and the transport coefficients.

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