74 citations · 153 across the 5 of their papers we have counts for
5 papers
Leptogenesis Scenarios via Non-Thermally Produced Right-handed Neutrino and Sneutrino in Supersymmetric Seesaw Model
Masato Senami, Tsutomu Takayama
We reconsidered leptogenesis scenario from right-handed (s)neutrino produced by the decay of inflaton. Besides the well-investigated case that the neutrino decays instantaneously a…
Formation of intermediate-mass black holes as primordial black holes in the inflationary cosmology with running spectral index
Toshihiro Kawaguchi, Masahiro Kawasaki, Tsutomu Takayama +2
Formation of primordial black holes (PBHs) on astrophysical mass scales is a natural consequence of inflationary cosmology if the primordial perturbation spectrum has a large and n…
Affleck-Dine leptogenesis via multiscalar evolution in a supersymmetric seesaw model
Masato Senami, Tsutomu Takayama
A leptogenesis scenario in a supersymmetric standard model extended with introducing right-handed neutrinos is reconsidered. Lepton asymmetry is produced in the condensate of a rig…
Baryogenesis via left-right asymmetry generation by Affleck-Dine mechanism in Dirac neutrino model
Masato Senami, Tsutomu Takayama
A baryogenesis scenario in supersymmetric standard models with Dirac neutrinos proposed by Abel and Page is reconsidered with introducing intermediate scale physics to stabilize th…
Power Spectrum of the Density Perturbations From Smooth Hybrid New Inflation Model
Masahiro Kawasaki, Tsutomu Takayama, Masahide Yamaguchi +1
We numerically investigate density perturbations generated in the smooth hybrid new inflation model, a kind of double inflation model that is designed to reproduce the running spec…