162 citations · 2.1k across the 70 of their papers we have counts for
5 papers · 1 filter
Can baryon asymmetry be explained by a large initial value before inflation?
Kai Murai, Fuminobu Takahashi, Masaki Yamada +1
We show that the baryon asymmetry of the Universe cannot be explained by a large initial value before inflation because it inevitably predicts correlated baryon isocurvature pertur…
Indirect Detection of Decaying Dark Matter with High Angular Resolution: Case for axion search by IRCS at Subaru Telescope
Wen Yin, Kohei Hayashi
Recent advances in cosmic-ray detectors have provided exceptional sensitivities of dark matter with high angular resolution. Motivated by this, we present a comprehensive study of…
Early dark energy by dark Higgs, and axion-induced non-thermal trapping
Shota Nakagawa, Fuminobu Takahashi, Wen Yin
We propose a new scenario of early dark energy (EDE) with a dark Higgs trapped at the origin. To keep this dark Higgs trapped until around the matter-radiation equality, we use dar…
Power spectrum of domain-wall network and its implications for isotropic and anisotropic cosmic birefringence
Naoya Kitajima, Fumiaki Kozai, Fuminobu Takahashi +1
Recently, based on a novel analysis of the Planck satellite data, a hint of a uniform rotation of the polarization of cosmic microwave background photons, called isotropic cosmic b…
Cosmological implications of in light of the Hubble tension
Fuminobu Takahashi, Wen Yin
Recently, a low- measurement of the Hubble constant, , was reported by the SH0ES Team. The long-standing Hubble tension, i.e. the differenc…