Non-thermal Leptogenesis after Majoron Hilltop Inflation

Understand

We analyse non-thermal leptogenesis after models of Majoron hilltop inflation, where the scalar field that provides masses for the right-handed neutrinos and sneutrinos via its vacuum expectation value acts as the inflaton.

• We discuss different realisations of Majoron inflation models with different hilltop shapes and couplings to the right-handed (s)neutrinos.
• To study the non-thermally produced baryon asymmetry in these models, we numerically solve the relevant Boltzmann equations.
• In contrast to previous studies, we include the effects from resonant sneutrino particle production during preheating.