Speaker
Dimitri Nanopoulos
(University of Texas (US))
Description
Flipped SU(5) is embedded in a no-scale supergravity framework and discuss its predictions for cosmic microwave background observables which are Starobinsky-like, with a possible variation in the ratio r of the tensor to scalar perturbations. I'll discuss the model's predictions for neutrino masses,and show their dependence on the inflaton mass,thus correlating the heavy right-handed neutrino mass to the inflaton/inflatino one. Strong reheating is favored that leads,through supercosmology, to a GUT phase transition without excessive entropy production which could dilute the generated baryon asymmetry.
