Anomalous Transport Processes in Anisotropically Expanding Quark-Gluon Plasmas | Zendy

Masayuki Asakawa | Zendy; Steffen A. Bass | Zendy; Berndt Müller | Zendy

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Anomalous Transport Processes in Anisotropically Expanding Quark-Gluon Plasmas

Author(s) -

Masayuki Asakawa,

Steffen A. Bass,

Berndt Müller

Publication year - 2006

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.116.725

Subject(s) - physics , parton , quark–gluon plasma , plasma , viscosity , particle physics , quark , gluon , coupling (piping) , volume viscosity , strange matter , quantum electrodynamics , thermal , nuclear physics , thermodynamics , mechanical engineering , engineering

We derive an expression for the anomalous viscosity in an anisotropicallyexpanding quark-gluon-plasma, which arises from interactions of thermal partonswith dynamically generated color fields. The anomalous viscosity dominates overthe collisional viscosity for large velocity gradients or weak coupling. Thiseffect may provide an explanation for the apparent ``nearly perfect'' liquidityof the matter produced in nuclear collisions at RHIC without the assumptionthat it is a strongly coupled state.Comment: 31 pages, 1 figure, some typos in published version are correcte

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