Anomalous viscosity of an expanding quark-gluon plasma
Nuclear Theory
2008-11-26 v2 High Energy Physics - Phenomenology
Nuclear Experiment
Abstract
We argue that an expanding quark-gluon plasma has an anomalous viscosity, which arises from interactions with dynamically generated colour fields. The anomalous viscosity dominates over the collisional viscosity for large velocity gradients or weak coupling. This effect may provide an explanation for the apparent near perfect liquidity of the matter produced in nuclear collisions at RHIC without the assumption that it is a strongly coupled state.
Keywords
Cite
@article{arxiv.nucl-th/0702007,
title = {Anomalous viscosity of an expanding quark-gluon plasma},
author = {M. Asakawa and S. A. Bass and B. Müller},
journal= {arXiv preprint arXiv:nucl-th/0702007},
year = {2008}
}
Comments
4 pages, 1 figure, to appear in the proceedings of the 19th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions: Quark Matter 2006 (QM 2006), Shanghai, China, 14-20 Nov 2006