Leptogenesis after superconformal subcritical hybrid inflation
  We consider an extended version of superconformal subcritical hybrid
inflation model by introducing three right-handed neutrinos that have the
Majorana mass terms. In the model one of the right-handed sneutrinos plays a
role of the inflaton field, and it decays to reheat the universe after
inflation. The vacuum expectation value for the waterfall field gives an
unconventional pattern of the light neutrino mass matrix, and the neutrino
Yukawa couplings that determine the reheating temperature are not constrained
by the neutrino oscillation data. Consequently thermal leptogenesis or
sneutrino leptogenesis is realized.
