PS08 Physics Beyond the Standard Model
GUT scale inflation and leptogenesis
Bartol Research Institute, University of Delaware, Newark, DE 19716, USA
Accepted: 4 November 2003
Published online: 7 November 2003
We reconsider supersymmetric hybrid inflation in which inflation is associated with the breaking of a gauge symmetry G to H, with the symmetry breaking scale M~1016 GeV. The models discussed feature a spectral index while and the tensor to scalar ratio . If G corresponds to SO(10) or one of its rank five subgroups, the observed baryon asymmetry is naturally explained via leptogenesis.
© Società Italiana di Fisica, Springer-Verlag, 2004