Viscous hydrodynamics with bulk viscosity -- uncertainties from relaxation time and initial conditions

Details Viscous hydrodynamics with bulk viscosity -- uncertainties from relaxation time and initial conditions Viscous hydrodynamics with bulk viscosity -- uncertainties from relaxation time and initial conditions

2009-07-14

arxiv.org/abs/0907.2262v2

Nucl.Phys.A830:467c-470c,2009

Physics

Nuclear Physics

Nuclear Theory

To appear in the proceedings of Quark Matter 2009: 21th International Conference on Ultra-Relativistic Nucleus Nucleus Collisi

Scientific paper

10.1016/j.nuclphysa.2009.10.041

Bulk viscosity suppresses elliptic flow v_2, as does shear viscosity. It can
thus not be neglected when extracting the shear viscosity from elliptic flow
data. We here explore uncertainties in the bulk viscous contribution to viscous
v_2 suppression that arise from presently uncontrolled uncertainties in the
initial value of the bulk viscous pressure and its microscopic relaxation time.

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