Speaker
Yoshihiro Gunji
(Kanazawa University)
Description
We study a generalized superconformal model that gives rise to a subcritical regime of D-term hybrid inflation. Formulating the model in a Jordan frame, the effective potential of the subcritical regime is derived in the Einstein frame. It turns out the inflaton-waterfall field dynamics leads to various types of inflaton potential. Consequently the tensor-to-scalar ratio is found to range from 10^{−4} (10^{−3}) to 0.1 for get 60 (50) e-folds before the end of inflation.
