Viscosity and boost invariance at RHIC and LHC

Details Viscosity and boost invariance at RHIC and LHC Viscosity and boost invariance at RHIC and LHC

2008-03-31

arxiv.org/abs/0803.4447v1

Acta Phys.Polon.B39:1539-1548,2008

Physics

Nuclear Physics

Nuclear Theory

Presented at the Cracow Epiphany Conference on LHC Physics, 4-6 January 2008, Cracow, Poland

Scientific paper

We consider the longitudinal hydrodynamic evolution of the fireball created in a relativistic heavy-ion collision. Nonzero shear viscosity reduces the colling rate of the system and hinders the acceleration of the longitudinal flow. As a consequence, the initial energy density needed to reproduce the experimental data at RHIC energies is significantly reduced. At LHC energies, we expect that shear viscosity helps to conserve a Bjorken plateau in the rapidity distributions during the expansion.

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