Cosmological quark-hadron phase transition and the effect of viscosity.

Details Cosmological quark-hadron phase transition and the effect of viscosity. Cosmological quark-hadron phase transition and the effect of viscosity.

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jkps...28..436s&link_type=abstract

Journal of the Korean Physical Society, Vol. 28, No. 4, p. 436 - 441

Mathematics

Logic

1

Universe: Phase Transitions, Universe: Temperatures

Scientific paper

It is generally believed that the first-order cosmological quark-hadron phase transition would have occurred when the temperature of the universe was around Tc ≡ 200 MeV. The main object of this work is to trace the temperature evolution of the universe during this phase transition. The authors treat the quark-gluon plasma as an imperfect fluid and solve the dynamical equation numerically taking into account the effect of the bulk viscosity. They find that, as the phase transition proceeds, the supercooled universe is not reheated back to the critical temperature. The effect of the bulk viscosity is found to reduce the amount of supercooling.

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