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arXiv · 1406.0704

Horava-Lifshitz cosmology, entropic interpretation and quark-hadron phase transition

F. Kheyri·M. Khodadi·H. R. Sepangi
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Abstract

Based on the assumptions of the standard model of cosmology, a phase transition associated with chiral symmetry breaking after the electroweak transition has occurred at approximately $10μ$ seconds after the Big Bang to convert a plasma of free quarks and gluons into hadrons. We consider such a phase transition in the context of a deformed Horava-Lifshitz cosmology. The Friedmann equation for the deformed Horava-Lifshitz universe is obtained using the entropic interpretation of gravity, proposed by Verlinde. We investigate the effects of the parameter $ω$ appearing in the theory on the evolution of the physical quantities relevant to a description of the early universe, namely, the energy density and temperature before, during and after the phase transition. Finally, we study the cross-over phase transition in both high and low temperature regions in view of the recent lattice QCD simulations data.

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F. Kheyri, M. Khodadi, H. R. Sepangi. 2014-07-09. Horava-Lifshitz cosmology, entropic interpretation and quark-hadron phase transition. https://doi.org/10.1016/j.aop.2013.01.014

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