High Energy Theory Group Seminars

Gravitational waves as a complementary window into Grand Unification and Leptogenesis

by Jessica Turner (IPPP Durham)

1/1-2 - Aula "C. Voci" (Dipartimento di Fisica e Astronomia - Edificio Marzolo)

1/1-2 - Aula "C. Voci"

Dipartimento di Fisica e Astronomia - Edificio Marzolo


I will discuss how proton decay combined with gravitational waves can be used to test Grand Unified Theories (GUTs). In particular, proton decay searches by largescale multipurpose neutrino experiments DUNE, Hyper-Kamiokande and JUNO will either discover proton decay or further push the symmetry-breaking scale above 10^16 GeV. Another possible observational consequence of GUTs is the formation of a cosmic string network produced during the breaking of the GUT to the Standard Model gauge group that can produce a stochastic background of gravitational waves, which several gravitational wave detectors will test over a wide frequency range. I will demonstrate the non-trivial complementarity between the observation of proton decay and gravitational waves produced from cosmic strings in determining SO(10) GUT breaking chains and their compatibility with leptogenesis as a means of producing the observed matter-antimatter asymmetry.

Organized by

Francesco D'Eramo