Bulk viscosity effects on elliptic flow

Details Bulk viscosity effects on elliptic flow Bulk viscosity effects on elliptic flow

2009-07-24

arxiv.org/abs/0907.4269v2

Nucl.Phys.A830:729c-732c,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1016/j.nuclphysa.2009.10.119

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.

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