Anomalous Transport Processes in Anisotropically Expanding Quark-Gluon Plasmas

2006/08/31 by Masayuki Asakawa, M. Asakawa, S. A. Bass +3 · 8 citations
Physics and Astronomy · #Dust and Plasma Wave Phenomena #High-Energy Particle Collisions Research #Pulsars and Gravitational Waves Research #hep-ph #nucl-th

paper · pdf · doi:10.1143/ptp.116.725

published as Prog.Theor.Phys.116:725-755,2007 · 31 pages, 1 figure, some typos in published version are corrected

openalex publication_date 2006/10/01 · arxiv created 2006/11/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01

Abstract

We derive an expression for the anomalous viscosity in an anisotropically expanding quark-gluon-plasma, which arises from interactions of thermal partons with dynamically generated color 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 “nearly perfect” liquidity of the matter produced in nuclear collisions at RHIC without the assumption that it is a strongly coupled state.

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