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arXiv · 1008.5225

The realistic QCD equation of state in relativistic heavy-ion collisions and the early Universe

Wojciech Florkowski
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Abstract

The realistic equation of state of strongly interacting matter, that has been successfully applied in the recent hydrodynamic studies of hadron production in relativistic heavy-ion collisions at RHIC, is used in the Friedmann equation to determine the precise time evolution of thermodynamic parameters in the early Universe. A comparison with the results obtained with simple ideal-gas equations of state is made. The realistic equation of state describes a crossover rather than the first-order phase transition between the quark-gluon plasma and hadronic matter. Our numerical calculations show that small inhomogeneities of strongly interacting matter in the early Universe are moderately damped during such crossover.

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Wojciech Florkowski. 2010-08-31. The realistic QCD equation of state in relativistic heavy-ion collisions and the early Universe. https://doi.org/10.1016/j.nuclphysa.2011.01.024

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