2 papers
hep-ph2025
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-ph2025
Multi-Field Effects on Scalar Production in Stars
Yasuhiro Yamamoto, Koichi Yoshioka
This paper studies the dynamics of scalar particle production, focusing on the presence of multiple fields and couplings in the medium. The interplay of various fields and coupling…