Institut de recherche en mathematique et physique (IRMP)

Center for Cosmology, Particle Physics and Phenomenology (CP3)

Secteur des sciences et technologies
Invited seminars

A cosmological B-L phase transition

by Dr. Valerie Domcke (DESY)

Wednesday, 25 October 2017 from to (Europe/Brussels)
at Cyclotron ( 1-3rd floor-E.349 - Seminar room (E.349) )
Cosmic inflation is an impressively successful paradigm in our understanding of the early Universe. Its embedding into particle physics is however still an open question. In this talk, I will present a `complete' particle physics model of inflation. Based on the implementation of D-term hybrid inflation in strongly coupled supersymmetric gauge theories, this setup overcomes all the usual problems of D-term hybrid inflation, including the consistent generation of an Fayet-Iliopoulos term in supergravity and the cosmic string problem. The D term may be associated with a gauged U(1)_B-L, so that the end of inflation spontaneously breaks B-L in the visible sector, setting the stage for neutrino mass generation and leptogenesis. A single dynamically generated mass scale connects inflation, supersymmetry breaking and leptogenesis.