Anomalous viscosity of an expanding quark-gluon plasma.


Journal Article

We argue that an expanding quark-gluon plasma has an anomalous viscosity, which arises from interactions with dynamically generated color fields. We derive an expression for the anomalous viscosity in the turbulent plasma domain and apply it to the hydrodynamic expansion phase, when the quark-gluon plasma is near equilibrium. The anomalous viscosity dominates over the collisional viscosity for weak coupling and not too late times. This effect may provide an explanation for the apparent "nearly perfect" liquidity of the matter produced in nuclear collisions at the Relativistic Heavy Ion Collider without the assumption that it is a strongly coupled state.

Full Text

Duke Authors

Cited Authors

  • Asakawa, M; Bass, SA; Müller, B

Published Date

  • June 26, 2006

Published In

Volume / Issue

  • 96 / 25

Start / End Page

  • 252301 -

PubMed ID

  • 16907297

Pubmed Central ID

  • 16907297

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.96.252301


  • eng