Baryogenesis through Nonequilibrium Processes in the Inflationary Universe : Astrophysics and Relativity
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概要
- 論文の詳細を見る
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 inflaton 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 T_R to obtain an adequate baryon asymmetry is discussed and it is shown that T_R can be as small as 10^5 GeV under the present experimental limit on proton life.
- 理論物理学刊行会の論文
- 1988-04-25
著者
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小玉 英雄
Kek Tsukuba Jpn
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SATO Katsuhiko
Department of Physics, Kyoto University
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KODAMA Hideo
Department of Physics, College of Liberal Arts and Sciences Kyoto University
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Kodama Hideo
Department Of Particle And Nuclear Physics Graduate University For Advanced Studies:theory Center Ke
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Sato Katsuhiko
Department Of Cardiovascular Medicine Hokkaido University School Of Medicine
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Yokoyama Jun′ichi
Department of Physics, University of Tokyo
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KODAMA Hideo
Department of Physics, Osaka University : Department of Physics, Kyoto University
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YOKOYAMA Jun'ichi
Uji Research Center, Yukawa Institute for Theoretical Physics, Kyoto University
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YOKOYAMA Jun'ichi
Department of Physics,Stanford University : Yukawa Institute for Theoretical Physics,Kyoto University
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KODAMA Hideo
Theory Center, Institute of Particle and Nuclear Studies, KEK:Department of Particles and Nuclear Physics, The Graduate University for Advanced Studies
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Yokoyama Jun′ichi
Department of Earth and Space Science, Graduate School of Science Osaka University
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