Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2011-01-12
Phys.Rev.Lett.106:212302,2011
Physics
Nuclear Physics
Nuclear Theory
4 pages, 3 figures, version accepted for publication in Physical Review Letters, clarified the temperature regions and phases
Scientific paper
10.1103/PhysRevLett.106.212302
We investigate the influence of a temperature-dependent shear viscosity over entropy density ratio eta/s on the transverse momentum spectra and elliptic flow of hadrons in ultrarelativistic heavy-ion collisions. We find that the elliptic flow in sqrt(s_NN) = 200 GeV Au+Au collisions at RHIC is dominated by the viscosity in the hadronic phase and in the phase transition region, but largely insensitive to the viscosity of the quark-gluon plasma (QGP). At the highest LHC energy, the elliptic flow becomes sensitive to the QGP viscosity and insensitive to the hadronic viscosity.
Denicol Gabriel S.
Huovinen Pasi
Molnar Etele
Niemi Harri
Rischke Dirk H.
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