Early dissipation and viscosity
Nuclear Experiment
2008-11-26 v1 Nuclear Theory
Abstract
We consider dissipative phenomena due to the relaxation of an initial anisotropic local pressure in the fireball created in relativistic heavy-ion collisions, both for the Bjorken boost-invariant case and for the azimuthally symmetric radial expansion with boost-invariance. The resulting increase of the entropy can be counterbalanced by a suitable retuning of the initial temperature. An increase of the transverse collective flow is observed. The influence of the shear viscosity on the longitudinal expansion is also studied. Viscosity reduces the cooling rate from the longitudinal work and counteracts the pressure gradients that accelerate the longitudinal flow.
Keywords
Cite
@article{arxiv.0804.3952,
title = {Early dissipation and viscosity},
author = {Piotr Bozek},
journal= {arXiv preprint arXiv:0804.3952},
year = {2008}
}
Comments
Presented at Quark Matter 2008, February 4-10, 2008, Jaipur India