Baryogenesis from Dark Matter Freeze In

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 recent developments in freeze-in baryogenesis, including a testable mechanism for the simultaneous production of dark matter and baryogenesis via dark matter oscillations. I will highlight the connections between the early universe dynamics and phenomenology, including tests at colliders, and in cosmological and astrophysical observables. I will also discuss some new results for UV freeze-in and in scenarios where the asymmetry is first generated in the Higgs sector rather than in baryons or leptons.