2 papers
astro-ph.CO2023
Primordial Origin of Supermassive Black Holes from Axion Bubbles
Kentaro Kasai, Masahiro Kawasaki, Naoya Kitajima +3
We study a modification of the primordial black hole (PBH) formation model from axion bubbles. We assume that the Peccei-Quinn scalar rolls down in the radial direction from a larg…
hep-ph2003
Affleck-Dine mechanism with negative thermal logarithmic potential
S. Kasuya, M. Kawasaki, Fuminobu Takahashi
We investigate whether the Affleck-Dine (AD) mechanism works when the contribution of the two-loop thermal correction to the potential is negative in the gauge-mediated supersymmet…