38 citations · 49 across the 3 of their papers we have counts for
5 papers
More about Q-ball with elliptical orbit
Fuminori Hasegawa, Jeong-Pyong Hong, Motoo Suzuki
Q-balls formed from the Affleck-Dine field have rich cosmological implications and have been extensively studied from both theoretical and simulational approaches. From the theoret…
Primordial Black Holes from Affleck-Dine Mechanism
Fuminori Hasegawa, Masahiro Kawasaki
The recent observations of the gravitational waves (GWs) by LIGO-Virgo collaboration infer the increasing possibility of the primordial black holes (PBHs). Recently it was pointed…
Gravitino Problem in Inflation Driven by Inflaton-Polonyi Kähler Coupling
Fuminori Hasegawa, Kazunori Nakayama, Takahiro Terada +1
We discuss the cosmological gravitino problem in inflation models in which the inflaton potential is constructed from Kähler potential rather than superpotential: a representative…
Oscillating Affleck-Dine condensate and its cosmological implications
Fuminori Hasegawa, Masahiro Kawasaki
We study the dynamics of the Affleck-Dine field after inflation in more detail. After inflation, the Affleck-Dine field inevitably oscillates around the potential minimum. This osc…
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…