Speaker
Osamu Seto
(Hokkai-Gakuen University)
Description
Coherently generated PQ scalar fields could dominate the energy density in the early
Universe and decay into relativistic axions, which would confront with the current
dark radiation constraints. We study the condition that a thermal inflation driven
by a U(1) gauged Higgs field dilutes such axions, in particular, for the case of
gauged B-L symetry.
Author
Osamu Seto
(Hokkai-Gakuen University)
Co-authors
Hironori Hattori
(Hokkaido University)
Naoya Omoto
(Hokkaido University)
Tatsuo Kobayashi
(Hokkaido University)
