2 papers
hep-ph2024
Two-field inflation from one complex scalar with symmetry breaking
Yoshihiko Abe, Toshimasa Ito, Koichi Yoshioka
We study two-field inflation derived from a single complex scalar field with a nonzero vacuum expectation value. The dynamics of inflation are governed by two parameters, the vacuu…
hep-ph2021
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…