88 citations · 174 across the 6 of their papers we have counts for
14 papers
Stochastic effects on observation of ultralight bosonic dark matter
Hiromasa Nakatsuka, Soichiro Morisaki, Tomohiro Fujita +4
Ultralight bosonic particles are fascinating candidates of dark matter (DM). It behaves as classical waves in our Galaxy due to its large number density. There have been various me…
Free Streaming Length of Axion-Like Particle After Oscillon/ I-ball Decays
Kaname Imagawa, Masahiro Kawasaki, Kai Murai +2
Axion-like particles (ALPs) are pseudoscalar bosons predicted by string theory. The ALPs have a shallower potential than a quadratic one, which induces the instability and can form…
Strong clustering of primordial black holes from Affleck-Dine mechanism
Masahiro Kawasaki, Kai Murai, Hiromasa Nakatsuka
Primordial black hole (PBH) is a fascinating candidate for the origin of binary merger events observed by LIGO-Virgo collaboration. The spatial distribution of PBHs at formation is…
Axion dark matter search using arm cavity transmitted beams of gravitational wave detectors
Koji Nagano, Hiromasa Nakatsuka, Soichiro Morisaki +3
Axion is a promising candidate for ultralight dark matter which may cause a polarization rotation of laser light. Recently, a new idea of probing the axion dark matter by optical l…
Gravitational waves from type II axion-like curvaton model and its implication for NANOGrav result
Masahiro Kawasaki, Hiromasa Nakatsuka
The recent report of NANOGrav is gathering attention since its signal can be explained by the stochastic gravitational waves (GWs) with at H…
Detection of isotropic cosmic birefringence and its implications for axion-like particles including dark energy
Tomohiro Fujita, Kai Murai, Hiromasa Nakatsuka +1
We investigate the possibility that axion-like particles (ALPs) with various potentials account for the isotropic birefringence recently reported by analyzing the Planck 2018 polar…