Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-08-24
Prog.Theor.Phys.116:725-755,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
31 pages, 1 figure, some typos in published version are corrected
Scientific paper
10.1143/PTP.116.725
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.
Asakawa Masayuki
Bass Steffen A.
Müller Berndt
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