2013/01/27 by F. Kheyri, M. Khodadi, H. R. Sepangi
Physics and Astronomy · #gr-qc #hep-th
paper · pdf · doi:10.1140/epjc/s10052-013-2286-0
published as Eur. Phys. J. C. 73 (2013) 2286 · 14 pages, 11 figures, to appear in Eur. Phys. J. C. arXiv admin note: text overlap with arXiv:0912.2541, arXiv:0807.3066, arXiv:1005.3508, arXiv:1011.4230 by other authors
arxiv created 2013/01/27 · arxiv updated 2015/06/12
The early universe is believed to have undergone a QCD phase transition to hadrons at about 10μs after the big bang. We study such a transition in the context of the non-detailed balance Horava-Lifshitz theory by investigating the effects of the dynamical coupling constant λ in a flat universe. The evolution of the relevant physical quantities, namely the energy density ρ, temperature T, scale factor a and the Hubble parameter H is investigated before, during and after the phase transition, assumed to be of first order. Also, in view of the recent lattice QCD simulations data, we study a cross-over phase transition of the early universe whose results are based on two different sets of lattice data.