240 citations · 1.3k across the 27 of their papers we have counts for
6 papers · 1 filter
Towards a Scale Free Electroweak Baryogenesis
Kazuya Ishikawa, Teppei Kitahara, Masahiro Takimoto
We propose a new electroweak baryogenesis scenario in high-scale supersymmetric (SUSY) models. We consider a singlet extension of the minimal SUSY standard model introducing additi…
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…
Singlino Resonant Dark Matter and 125 GeV Higgs Boson in High-Scale Supersymmetry
Kazuya Ishikawa, Teppei Kitahara, Masahiro Takimoto
We consider a singlino Dark Matter (DM) scenario in a singlet extension model of the Minimal Supersymmetric Standard Model, which is so-called the Nearly MSSM (nMSSM). We find that…
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…
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…
Curvaton Dynamics Revisited
Kyohei Mukaida, Kazunori Nakayama, Masahiro Takimoto
We revisit the dynamics of the curvaton in detail taking account of effects from thermal environment, effective potential and decay/dissipation rate for general field values and co…