Anomalous Transport Processes in Anisotropically Expanding Quark-Gluon Plasmas
نویسندگان
چکیده
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.
منابع مشابه
Anomalous viscosity of an expanding quark-gluon plasma.
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 ...
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