Bulk viscosity of QCD matter near the critical temperature

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dc.creatorKharzeev, D.
dc.creatorTuchin, K.
dc.date2007-05-29
dc.date2007-05-29
dc.date.accessioned2026-07-07T11:56:53Z
dc.date.available2026-07-07T11:56:53Z
dc.descriptionKubo's formula relates bulk viscosity to the retarded Green's function of the trace of the energy-momentum tensor. Using low energy theorems of QCD for the latter we derive the formula which relates the bulk viscosity to the energy density and pressure of hot matter. We then employ the available lattice QCD data to extract the bulk viscosity as a function of temperature. We find that close to the deconfinement temperature bulk viscosity becomes large, with viscosity-to-entropy ratio zeta/s about 1.
dc.description8 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/0705.4280
dc.identifierhttp://arxiv.org/abs/0705.4280
dc.identifierJHEP0809:093,2008
dc.identifierdoi:10.1088/1126-6708/2008/09/093
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205689
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Lattice
dc.subjectNuclear Experiment
dc.subjectNuclear Theory
dc.titleBulk viscosity of QCD matter near the critical temperature
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