Speaker
Description
A rotation in Peccei-Quinn field space along the axion direction can address cosmological mysteries, including dark matter, baryon asymmetry, cosmic perturbations, and the Hubble tension. This dynamics may naturally arise as a result of quantum gravity effects and cosmic inflation. Axion rotations can simultaneously give a new origin of axion dark matter via kinetic misalignment and generate the observed excess of matter over antimatter in the Universe via axiogenesis. For ultralight (QCD) axions, this cogenesis scenario predicts axion properties more experimentally accessible than the conventional ones. For heavy and cosmologically unstable QCD axions, predictions from axiogenesis point to regions that can be probed by neutrino experiments and long-lived particle searches. In this talk, we will provide an overview of this paradigm and discuss exciting potential connections to flavor physics.
