92 citations · 132 across the 5 of their papers we have counts for
9 papers
Thermal Effects and Sudden Decay Approximation in the Curvaton Scenario
Naoya Kitajima, David Langlois, Tomo Takahashi +2
We study the impact of a temperature-dependent curvaton decay rate on the primordial curvature perturbation generated in the curvaton scenario. Using the familiar sudden decay appr…
A new algorithm for calculating the curvature perturbations in stochastic inflation
Tomohiro Fujita, Masahiro Kawasaki, Yuichiro Tada +1
We propose a new approach for calculating the curvature perturbations produced during inflation in the stochastic formalism. In our formalism, the fluctuations of the e-foldings ar…
Hubble-induced mass from MSSM plasma
Masahiro Kawasaki, Fuminobu Takahashi, Tomohiro Takesako
We evaluate the effective mass of a scalar field phi coupled to thermal plasma through Planck-suppressed interactions. We find it useful to rescale the coupled fields so that all t…
Stochastic Approach to Flat Direction during Inflation
Masahiro Kawasaki, Tomohiro Takesako
We revisit the time evolution of a flat and non-flat direction system during inflation. In order to take into account quantum noises in the analysis, we base on stochastic formalis…
Remarks on Hubble Induced Mass from Fermion Kinetic Term
Masahiro Kawasaki, Tomohiro Takesako
We evaluate the effective mass of a scalar field which interacts with visible sector via Planck-suppressed coupling in supergravity framework. We focus on the radiation-dominated (…
Resonant annihilation of long-lived massive colored particles through hadronic collisions
Motohiko Kusakabe, Tomohiro Takesako
Hypothetical long-lived massive colored particles (MCPs or Ys) would be confined in colorless exotic strongly interacting massive particles (SIMPs) at color confinement temperature…