CHAOTIC INFLATION AND BARYOGENESIS BY RIGHT-HANDED SNEUTRINOS

We present a model of chaotic inflation driven by the superpartner of the right-handed neutrino (N(R)). This model gives the correct magnitude of the density perturbation observed by the Cosmic Background Explorer satellite with a right-handed neutrino mass congruent-to 10(13) GeV, which is also preferred by the Mikheyev-Smirnov-Wolfenstein solution to the solar neutrino problem. The reheating process is the decay of the coherently oscillating N(R). This decay process also generates lepton asymmetry via CP violation, which will be converted to baryon asymmetry thanks to the electroweak anomaly. This model can incorporate the tau-neutrino mass congruent-to 10 eV.