The centrality dependence of elliptic flow, the hydrodynamic limit, and the viscosity of hot QCD

Details The centrality dependence of elliptic flow, the hydrodynamic limit, and the viscosity of hot QCD The centrality dependence of elliptic flow, the hydrodynamic limit, and the viscosity of hot QCD

2007-04-26

arxiv.org/abs/0704.3553v2

Phys.Rev.C76:024905,2007

Physics

Nuclear Physics

Nuclear Theory

5 pages, 2 figures. Extended discussion of the results, in particular of lower viscosity and sound velocity required by CGC in

Scientific paper

10.1103/PhysRevC.76.024905

We show that the centrality and system-size dependence of elliptic flow measured at RHIC are fully described by a simple model based on eccentricity scaling and incomplete thermalization. We argue that the elliptic flow is at least 25% below the (ideal) ``hydrodynamic limit'', even for the most central Au-Au collisions. This lack of perfect equilibration allows for estimates of the effective parton cross section in the Quark-Gluon Plasma and of its viscosity to entropy density ratio. We also show how the initial conditions affect the transport coefficients and thermodynamic quantities extracted from the data, in particular the viscosity and the speed of sound.

Affiliated with

Also associated with

No associations

Rating

The centrality dependence of elliptic flow, the hydrodynamic limit, and the viscosity of hot QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The centrality dependence of elliptic flow, the hydrodynamic limit, and the viscosity of hot QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The centrality dependence of elliptic flow, the hydrodynamic limit, and the viscosity of hot QCD will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-373179