Suppression of the shear viscosity near the critical temperature in hot QCD
نویسندگان
چکیده
منابع مشابه
Bulk viscosity of QCD matter near the critical temperature
Kubo'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 t...
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ar X iv : 0 81 1 . 12 02 v 1 [ he p - ph ] 7 N ov 2 00 8 Suppression of the shear viscosity near the critical temperature in hot QCD
We consider QCD near but above critical temperature Tc. The pressure, susceptibilities and the renormalized Polyakov loop — which is an order parameter for the deconfining phase transition — dramatically change up to temperatures a few times Tc. We refer to this region as a ”semi”QGP, where partial confinement plays important role. We show that the shear viscosity η is suppressed by two powers ...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2009
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2009.01.023