The "minimal" viscosity and elliptic flow at RHIC

Abstract

We show from covariant transport theory that, for a massless ideal gas equation of state, even a small shear viscosity to entropy density ratio $\eta \approx s/(4\pi )$ generates significant 15-30% dissipative corrections to elliptic flow for conditions expected in mid-peripheral (b = 8 fm) Au+Au collisions at $\sqrt{s_{NN}}\sim 200$ GeV at RHIC.

Comments: 3 eps figures