Gravitational Wave Signatures of Asymmetric Dark Matter

Theories of asymmetric dark matter offer a simultaneous solution to two of the most intriguing open questions in particle physics: the nature of dark matter and the origin of the matter-antimatter asymmetry of the Universe. In this talk, I will discuss the prospects for probing this class of models using gravitational wave detectors. I will focus on a concrete theory in which the Standard Model gauge group is extended by an extra SU(2) symmetry, with the leptons forming doublets with new fermionic partners. One of those new fermions serves as a good candidate for particle dark matter. The extra SU(2) symmetry is broken at a high scale, leading to a successful baryogenesis mechanism through a strong first order phase transition in the early Universe. This results in the production of gravitational waves whose signatures can be searched for in upcoming gravitational wave experiments.