Some Comments on Relativistic Hydrodynamics and Fuzzy Bags

Abstract

Three subjects are considered here: the relativistic hydrodynamics equations for a boost-invariant expanding fluid; the fuzzy bag model for the pressure which recently appeared in QCD phenomenology; and the early space-time evolution of the QCD matter, drawn from model studies, which can also be expected to arise in realistic fluid dynamics relevant to heavy ion collisions at LHC.

Comments: 10 pages, 5 figures; v3: additional discussion of lattice data, minor clarifications, references added