206 citations · 1.3k across the 55 of their papers we have counts for
55 papers
Stellar cooling limits on light scalar boson revisited
Yasuhiro Yamamoto, Koichi Yoshioka
We revisit the stellar cooling limits on the light scalar boson whose coupling to the Standard Model particles is described by its mixing with the Higgs boson. Strong constraints h…
Quantum current dissipation in superconducting strings and vortons
Yoshihiko Abe, Yu Hamada, Kota Saji +1
In this work, the current stability is discussed for cosmic strings with the bosonic superconductivity. A non-vanishing curvature of string generally induce the quantum instability…
Leptonic CP asymmetry and Light flavored scalar
Yoshihiko Abe, Toshimasa Ito, Koichi Yoshioka
We consider a situation where right-handed neutrinos couple to a light scalar which is possibly a Nambu-Goldstone boson resulting from high-energy symmetry breaking. Its coupling i…
Non-thermal Production of PNGB Dark Matter and Inflation
Yoshihiko Abe, Takashi Toma, Koichi Yoshioka
A pseudo Nambu-Goldstone boson (pNGB) is a natural candidate of dark matter in that it avoids the severe direct detection bounds. We show in this paper that the pNGB has another di…
Electroweak axion string and superconductivity
Yoshihiko Abe, Yu Hamada, Koichi Yoshioka
We study the axion strings with the electroweak gauge flux in the DFSZ axion model and show that these strings, called the electroweak axion strings, can exhibit superconductivity…
TeV-scale Majorogenesis
Yoshihiko Abe, Yu Hamada, Takahiro Ohata +2
The Majoron, the Nambu-Goldstone boson of lepton number symmetry, is an interesting candidate for dark matter as it deeply connects the dark matter and neutrino physics. In this pa…