How much entropy is produced in strongly coupled Quark-Gluon Plasma (sQGP) by dissipative effects?

Abstract

We argue that estimates of dissipative effects based on the first-order hydrodynamics with shear viscosity are potentially misleading because higher order terms in the gradient expansion of the dissipative part of the stress tensor tend to reduce them. Using recently obtained sound dispersion relation in thermal $\mathcal{N}$=4 supersymmetric plasma, we calculate the $resummed$ effect of these high order terms for Bjorken expansion appropriate to RHIC/LHC collisions. A reduction of entropy production is found to be substantial, up to an order of magnitude.

4 pages, 4 figure

References in corpus (2)

• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• WKB analysis of the Regge-Wheeler equation down in the frequency plane

Cited by in corpus (7)

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• Suppression of elliptic flow in a minimally viscous quark-gluon plasma
• Early Time Dynamics in Heavy Ion Collisions from AdS/CFT Correspondence
• Entropy production in high-energy heavy-ion collisions and the correlation of shear viscosity and thermalization time
• Stress Tensor and Bulk Viscosity in Relativistic Nuclear Collisions
• Quark-Gluon Plasma - New Frontiers
• Aspects of causal viscous hydrodynamics