127 citations · 241 across the 7 of their papers we have counts for
5 papers · 1 filter
Axion Poltergeist
Keisuke Harigaya, Keisuke Inomata, Takahiro Terada
Rotations of axion fields in the early universe can produce dark matter and the matter-antimatter asymmetry of the universe. We point out that the rotation can generate an observab…
Gravitino Problem in Inflation Driven by Inflaton-Polonyi Kähler Coupling
Fuminori Hasegawa, Kazunori Nakayama, Takahiro Terada +1
We discuss the cosmological gravitino problem in inflation models in which the inflaton potential is constructed from Kähler potential rather than superpotential: a representative…
Gravitino Problem in Minimal Supergravity Inflation
Fuminori Hasegawa, Kyohei Mukaida, Kazunori Nakayama +2
We study non-thermal gravitino production in the minimal supergravity inflation. In this minimal model utilizing orthogonal nilpotent superfields, the particle spectrum includes on…
Toward Higgs inflation in the MSSM
Takahiro Terada
Adopting a recently proposed single-superfield framework of supergravity inflation, we consider large field inflationary models in which MSSM Higgs-like fields play the role of the…
Scalar Decay into Gravitinos in the Presence of D-term SUSY Breaking
Motoi Endo, Koichi Hamaguchi, Takahiro Terada
Scalar decay into gravitinos is studied in the presence of D-term supersymmetry (SUSY) breaking. The gravitinos produced by the decay of coherent oscillations of scalar fields, suc…