A thermodynamically congruous approach for QGP equation of state in the early universe

The strong force is ably described by Quantum Chromo-Dynamics (QCD), which also foretell us about a phase shift from a confined, hadronic to a hot, deconfined Quark Gluon Plasma (QGP) medium at very high temperatures. A temperature of transition for the phase shift between QGP and hadronic state can be found in the lattice gauge theory of QCD, taking place at values roughly around 150 MeV. We present a plot between the temperature and time which can be analysed to predict the transition temperature for such phase shift. The variation of T with t, where a transition can be predicted from the fact of temperature being constant in the region between 10⁻⁴ − 10⁻'5s, at which a temperature value observed around T ≈ 150 MeV is shown in the article. It is seen that when the dynamical quark masses are used in contrast with the phenomenological models, they yield an order one and a smooth crossover phase shift for the former and the later one