242 citations · 3.5k across the 87 of their papers we have counts for
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Axion Models with High Scale Inflation
Takeo Moroi, Kyohei Mukaida, Kazunori Nakayama +1
We revisit the cosmological aspects of axion models. In the high-scale inflation scenario, the Peccei-Quinn (PQ) symmetry is likely to be restored during/after inflation. If the cu…
Correspondence of I- and Q-balls as Non-relativistic Condensates
Kyohei Mukaida, Masahiro Takimoto
If a real scalar field is dominated by non-relativistic modes, then it approximately conserves its particle number and obeys an equation that governs a complex scalar field theory…
Dark Matter Chaotic Inflation in Light of BICEP2
Kyohei Mukaida, Kazunori Nakayama
We propose an economical model in which a singlet Z-odd scalar field accounts for the primordial inflation and the present dark matter abundance simultaneously in the light of…
Affleck-Dine Baryogenesis and Dark Matter Production after High-scale Inflation
Keisuke Harigaya, Ayuki Kamada, Masahiro Kawasaki +2
The discovery of the primordial B-mode polarisation by the BICEP2 experiment indicates inflation with a relatively high energy scale. Taking this indication into account, we propos…
Dark Matter Production in Late Time Reheating
Keisuke Harigaya, Masahiro Kawasaki, Kyohei Mukaida +1
We estimate dark matter density for the Universe with a reheating temperature smaller than the mass of dark matter, assuming dark matter to be a weakly interacting massive particle…
Suppressed Non-Gaussianity in the Curvaton Model
Kyohei Mukaida, Kazunori Nakayama, Masahiro Takimoto
We show that the local type non-Gaussianity in a class of curvaton models is suppressed, i.e. the non-linearity parameters f_{NL} and those related with higher order statistics can…