242 citations · 3.5k across the 87 of their papers we have counts for
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Primordial Black Holes for the LIGO Events in the Axion-like Curvaton Model
Kenta Ando, Keisuke Inomata, Masahiro Kawasaki +2
We revise primordial black hole (PBH) formation in the axion-like curvaton model and investigate whether PBHs formed in this model can be the origin of the gravtitational wave (GW)…
Double inflation as a single origin of primordial black holes for all dark matter and LIGO observations
Keisuke Inomata, Masahiro Kawasaki, Kyohei Mukaida +1
Primordial Black Hole (PBH) is one of the leading non-particle candidates for dark matter (DM). Although several observations severely constrain the amount of PBHs, it is recently…
primordial black holes and string axion dark matter
Keisuke Inomata, Masahiro Kawasaki, Kyohei Mukaida +2
LIGO-Virgo collaboration has found black holes as heavy as through the detections of the gravitational waves emitted during their mergers. Primordial black holes…
Electroweak Vacuum Metastability and Low-scale Inflation
Yohei Ema, Kyohei Mukaida, Kazunori Nakayama
We study the stability of the electroweak vacuum in low-scale inflation models whose Hubble parameter is much smaller than the instability scale of the Higgs potential. In general,…
False Vacuum Decay Catalyzed by Black Holes
Kyohei Mukaida, Masaki Yamada
False vacuum states are metastable in quantum field theories, and true vacuum bubbles can be nucleated due to the quantum tunneling effect. It was recently suggested that an evapor…
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…