2014/06/30 by F. Kheyri, M. Khodadi, H. R. Sepangi
Physics and Astronomy · #gr-qc #hep-th
paper · pdf · doi:10.1016/j.aop.2013.01.014
published as Annals of Physics 332 (2012) 75 · 17 pages, 7 figures. arXiv admin note: text overlap with arXiv:0710.0354 by other authors
arxiv created 2014/07/09 · arxiv updated 2015/06/19
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.