Description
LISA will test scenarios of strongly supercooled phase transitions at the TeV scale by searching for a stochastic background of gravitational waves. I will discuss how such a phase transition can be closely tied to the relic abundance of dark matter in certain classes of models which feature close-to-conformal potentials. In confining phase transitions, for example, the yield of composite dark matter can be set in a process of hadronization as fundamental constituents enter the expanding bubbles. The gravitational wave signal from the phase transition gives a unique signature of such DM scenarios, complementary to collider, direct and indirect searches.
