Horava-Lifshitz cosmology, entropic interpretation and quark-hadron phase transition
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 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 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.
Keywords
Cite
@article{arxiv.1406.0704,
title = {Horava-Lifshitz cosmology, entropic interpretation and quark-hadron phase transition},
author = {F. Kheyri and M. Khodadi and H. R. Sepangi},
journal= {arXiv preprint arXiv:1406.0704},
year = {2015}
}
Comments
17 pages, 7 figures. arXiv admin note: text overlap with arXiv:0710.0354 by other authors