The Effective Potential of Electroweak Theory with Two Massless Higgs Doublets at Finite Temperature

Details The Effective Potential of Electroweak Theory with Two Massless Higgs Doublets at Finite Temperature The Effective Potential of Electroweak Theory with Two Massless Higgs Doublets at Finite Temperature

1993-10-12

arxiv.org/abs/hep-ph/9310267v1

Prog.Theor.Phys. 91 (1994) 341-352

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 5 figures (included as compressed-uuencoded tar file), plain TeX( harvmac, epsf, tables ), KYUSHU-HET-10, SAGA-HE-50

Scientific paper

10.1143/PTP.91.341

The effective potential of electroweak theory with two massless Higgs doublets at finite temperature is studied. We investigate phase structure and critical temperature in this model by numerical analysis without high-temperature expansion. The phase transition is found to be of first order. The critical temperature is shown to be relatively low for typical scalar masses. The free energy of the critical bubble is calculated with some approximations and we find that the bubble nucleation can occur at a temperature a little below the critical temperature. We also discuss the possibility of the electroweak baryogenesis.

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