Elliptic Flow at Finite Shear Viscosity in a Kinetic Approach at RHIC

Details Elliptic Flow at Finite Shear Viscosity in a Kinetic Approach at RHIC Elliptic Flow at Finite Shear Viscosity in a Kinetic Approach at RHIC

2009-09-29

arxiv.org/abs/0909.5314v1

Nucl.Phys.A834:273c-275c,2010

Physics

Nuclear Physics

Nuclear Theory

3 pages, 4 figures, Proceedings of "Nucleus-Nucleus 2009" -Beijing (China), 16-21 August 2009. To be pubblished in Nucl. Phys.

Scientific paper

10.1016/j.nuclphysa.2009.12.057

Within a covariant parton cascade, we discuss the impact of both finite shear viscosity $\eta$ and freeze-out dynamics on the elliptic flow generated at RHIC. We find that the enhancement of $\eta/s$ in the cross-over region of the QGP phase transition cannot be neglected in order to extract the information from the QGP phase. We also point out that the elliptic flow $v_2(p_T)$ for a fluid at $\eta/s \sim 0.1-0.2$ is consistent with the one needed by quark number scaling drawing a nice consistency between the nearly perfect fluid property of QGP and the coalescence process.

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