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- Title
BARYOGENESIS IN THE INFLATIONARY UNIVERSE -THE INSTANTANEOUS REHEATING MODEL-.
- Authors
YOKOYAMA, JUN'ICHI; KODAMA, HIDEO; SATO, KATSUHIKO; SATO, NOBUAKI
- Abstract
Baryogenesis in the inflationary universe is investigated, assuming that the universe is reheated instantaneously. Boltzmann equations are numerically integrated to trace time evolution of asymmetries in quarks and leptons in the Friedmann stage after the reheating, starting from the thermal equilibrium state. It is shown that the sign of the final baryon asymmetry may change depending on the reheating temperature as a result of interplay of superheavy gauge and Higgs bosons, and its mechanism is clarified. Furthermore we suggest a mechanism of generating isocurvature fluctuations which could be the origin of the large scale structure of the universe. It is also found in the instantaneous reheating model that the reheating temperature Ti must satisfy Ti>MH/10 (MH: Higgs boson mass) for the observed baryon/entropy ratio to be explained.
- Publication
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics, 1987, Vol 2, Issue 6, p1809
- ISSN
0217-751X
- Publication type
Article
- DOI
10.1142/S0217751X87000946