Natural Chaotic Inflation in Supergravity and Leptogenesis


We comprehensively investigate a chaotic inflation model proposed recently in the framework of supergravity. In this model, the form of Kähler potential is determined by a symmetry, that is, the Nambu-Goldstone like shift symmetry, which guarantees the absence of the exponential factor in the potential for the inflaton field. Though we need introduction of… (More)


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