Speaker
Steven Ferrante
(Cornell University)
Description
We introduce a model of dark matter (DM) where the DM is a composite of a spontaneously broken conformal field theory. We find that if the DM relic abundance is determined by freeze-out of annihilations to dilatons, where the dilatons are heavier than the DM, then the model is compatible with theoretical and experimental constraints for DM masses in the 0.1-10 GeV range. The conformal phase transition is supercooled and strongly first-order, and can thus source large stochastic gravitational wave signals consistent with those recently observed at NANOGrav. Future experiments are projected to probe a majority of the viable parameter space in our model.
