119 citations · 479 across the 10 of their papers we have counts for
7 papers · 1 filter
Inhomogeneous baryogenesis, cosmic antimatter, and dark matter
A. D. Dolgov, M. Kawasaki, N. Kevlishvili
A model of inhomogeneous baryogenesis based on the Affleck and Dine mechanism is described. A simple coupling of the scalar baryon field to the inflaton allows for formation of ast…
Solving Cosmological Problems of Supersymmetric Axion Models in an Inflationary Universe
Masahiro Kawasaki, Kazunori Nakayama
We revisit inflationary cosmology of axion models in the light of recent developments on the inflaton decay in supergravity. We find that all the cosmological difficulties, includi…
Cosmological implications of supersymmetric axion models
Masahiro Kawasaki, Kazunori Nakayama, Masato Senami
We derive general constraints on supersymmetric extension of axion models, in particular paying careful attention to the cosmological effects of saxion. It is found that for every…
Cosmological Constraints on Neutrino Injection
Toru Kanzaki, Masahiro Kawasaki, Kazunori Kohri +1
We derive general constraints on the relic abundances of a long-lived particle which mainly decays into a neutrino (and something else) at cosmological time scales. Such an exotic…
Baryon Asymmetry in a Heavy Moduli Scenario
Masahiro Kawasaki, Kazunori Nakayama
In some models of supersymmetry breaking, modulus fields are heavy enough to decay before BBN. But the large entropy produced via moduli decay significantly dilutes the preexisting…
Big-Bang Nucleosynthesis with Long-Lived Charged Slepton
Masahiro Kawasaki, Kazunori Kohri, Takeo Moroi
We consider constraints on long-lived charged scalar leptons \tilde{l}^\pm in supersymmetric models, where gravitino is the lightest superparticle. We study the decay and hadroniza…