Abstract: Thermal dark matter scenarios are characterized by an exponential decrease in the comoving dark matter number density as the temperature drops below the dark matter mass in the early Universe. In this talk, we will discuss a novel thermal framework, bouncing dark matter, where the abundance instead undergoes a “bounce:” a transition from the exponential fall to an exponential rise, resulting in an enhancement of the final abundance by several orders of magnitude. We will discuss multiple realizations of this mechanism. The present day dark matter annihilation cross section can be significantly larger than the standard thermal target expected in canonical scenarios, improving the prospects for discovering indirect detection signals.
 
Virtual Zoom: https://lbnl.zoom.us/j/215429094