University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Monday, March 9th 2015
12:15 pm:
Speaker: Marco Peloso, University of Minnesota
Subject: A particle physics model for inflation and the baryon asymmetry of the universe

Motivated by the coincidence between the Hubble scale during inflation and the typical see-saw neutrino mass scale, we present a supergravity model where the inflaton is identified with a linear combination of right-handed sneutrino fields. The model accommodates an inflaton potential that is flatter than quadratic chaotic inflation, resulting in a measurable but not yet ruled out tensor-to-scalar ratio. The evolution of the sneutrino fields after inflation carries a lepton charge that can be the origin of the observed baryon asymmetry of the universe. This talk is based on the preprint arXiv:1501.06560

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