36 citations · 88 across the 4 of their papers we have counts for
9 papers · 1 filter
New D-term chaotic inflation in supergravity and leptogenesis
Kenji Kadota, Teruhiko Kawano, Masahide Yamaguchi
We present a new model of D-term dominated chaotic inflation in supergravity. The F-flat direction present in this model is lifted by the dominant D-term, which leads to chaotic in…
Sterile neutrino dark matter in warped extra dimensions
Kenji Kadota
We consider a (long-lived) sterile neutrino dark matter scenario in a five dimensional (5D) warped extra dimension model where the fields can live in the bulk, which is partly moti…
D-term chaotic inflation in supergravity
Kenji Kadota, Masahide Yamaguchi
Even though the chaotic inflation is one of the most popular inflation models for its simple dynamics and compelling resolutions to the initial condition problems, its realization…
Warped Leptogenesis with Dirac Neutrino Masses
Tony Gherghetta, Kenji Kadota, Masahide Yamaguchi
We show how leptogenesis can occur at the TeV scale with neutrinos that possess almost purely Dirac masses and negligible Majorana mass contributions as a consequence of the small…
The Decay of the Inflaton in No-scale Supergravity
Motoi Endo, Kenji Kadota, Keith A. Olive +2
We study the decay of the inflaton in no-scale supergravity and show that decay due to the gravitational interactions through supergravity effects is highly suppressed relative to…
D-term Inflation and Leptogenesis by Right-handed Sneutrino
Kenji Kadota, J. Yokoyama
We discuss a D-term inflation scenario where a right-handed sneutrino can be an inflaton field leading to a viable inflation and leptogenesis, with a minimal form of Kähler potenti…