Viscosity Information from Relativistic Nuclear Collisions: How Perfect is the Fluid Observed at RHIC?

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dc.creatorRomatschke, Paul
dc.creatorRomatschke, Ulrike
dc.date2007-06-11
dc.date2007-10-26
dc.date.accessioned2026-07-07T11:16:47Z
dc.date.available2026-07-07T11:16:47Z
dc.descriptionRelativistic viscous hydrodynamic fits to RHIC data on the centrality dependence of multiplicity, transverse and elliptic flow for sqrt{s}=200 GeV Au+Au collisions are presented. For Glauber-type initial conditions, while data on integrated v_2 is consistent with a ratio of viscosity over entropy density up to eta/s=0.16, data on minimum bias v_2 seems to favor a much smaller viscosity over entropy ratio, below the bound from the AdS/CFT conjecture. Some caveats on this result are discussed.
dc.description4 pages, 5 figures; v2: matches published version, title changed by journal
dc.identifierhttps://arxiv.org/abs/0706.1522
dc.identifierhttp://arxiv.org/abs/0706.1522
dc.identifierPhys.Rev.Lett.99:172301,2007
dc.identifierdoi:10.1103/PhysRevLett.99.172301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192789
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleViscosity Information from Relativistic Nuclear Collisions: How Perfect is the Fluid Observed at RHIC?
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