Phase transition gravitational waves from pseudo-Nambu-Goldstone dark matter and two Higgs doublets
Abstract We investigate the potential stochastic gravitational waves from first-order electroweak phase transitions in a model Pancake Pans with pseudo-Nambu-Goldstone dark matter and two Higgs doublets.The dark matter candidate can naturally evade direct detection bounds, and can achieve the observed relic abundance via the thermal mechanism.Three