Extracting shear viscosity of the Quark Gluon Plasma in the presence of bulk viscosity

Abstract

One of the most remarkable features of the Quark Gluon Plasma is its nearly perfect fluidity behavior indicated by the small shear viscosity to entropy density ratio obtained from fitting relativistic viscous hydrodynamics flow harmonics to experimental data. In recent years, bulk viscosity has also been considered in the context of event-by-event relativistic hydrodynamics and it has been found to have a non-trivial interplay with shear viscosity. In this paper some of the issues are discussed that require further work when extracting the shear viscosity to entropy density ratio in the presence of a non-zero bulk viscosity.

Talk presented CIPANP2015. 9 pages, LaTeX, 4 eps figures

References in corpus (7)

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• Magnetic Component of Quark-Gluon Plasma is also a Liquid!
• Viscous Effects on the Mapping of the Initial to Final State in Heavy Ion Collisions
• Hydrodynamic predictions for 5.02 TeV Pb-Pb collisions
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• Relating $\hat{q}$, $\eta /s$ and $\Delta E$ in an expanding Quark-Gluon Plasma
• Effective viscosities in a hydrodynamically expanding boost-invariant QCD plasma