Leptogenesis from Freeze In

Speaker: Brian Shuve (Harvey Mudd College)

Date: Monday, February 12, 2024

Time: 4:00 – 5:00 pm

Location: 472 Willamette Hall

Abstract: Models of freeze in feature a departure from equilibrium over an extended period of the early universe’s history, and they can naturally give rise to the observed matter-antimatter asymmetry. I will present several recent developments in freeze-in leptogenesis, including a novel, testable mechanism for the simultaneous production of dark matter and baryogenesis via dark matter oscillations, as well as studies of freeze-in leptogenesis in models of hidden-sector neutrinos. I will highlight the connections between the early universe dynamics and phenomenology, including tests at colliders, and in cosmological and astrophysical observables.

Host: Tien-Tien Yu