Physics
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pthph..79..800y&link_type=abstract
Progress of Theoretical Physics, Vol. 79, No. 4, pp. 800-818
Physics
4
Scientific paper
Baryogenesis in the reheating phase of the inflationary universe is investigated, taking into account non-thermal production of baryon-number-nonconserving gauge and Higgs bosons directly from an inflation field. Reheating processes and time evolution of asymmetries in quarks and leptons are traced numerically in terms of the reduced Boltzmann equations. Thereby the dependence of the final baryon asymmetry on various parameters such as CP violation, reheat temperature and Higgs boson mass is estimated for a specific GUT model. In particular it is found that the baryon asymmetry may change its sign in the course of relaxation even when only one species of Higgs bosons is relevant to baryogenesis. It is shown that this phenomenon can occur in any GUT model in general. Further the constraint on the reheat temperature TR to obtain an adequate baryon asymmetry is discussed and it is shown that TR can be as small as 10(5) GeV under the present experimental limit on proton life.
Kodama Hideo
Sato Kachishige
Yokoyama Jun'ichi
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