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Hammerschmitt A. Kripfganz J. Schmidt M. G. 《Zeitschrift fur Physik C Particles and Fields》1994,64(1):105-109
We investigate an extension of the Standard Model with a second Higgs doublet, showing a two stage phase transition. Wash-out of a baryon asymmetry after the phase transition can be easily avoided in this class of models.B+L transitions are more strongly suppressed in the intermediate phase than in the high temperature symmetric phase, however. Therefore, it becomes more difficult if not impossible to generate a sufficient baryon asymmetry during the phase transition.supported by Landes Graduierten Förderungs Gesetz 相似文献
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