Electroweak phase transition and gravitational waves in a two-component dark matter model

Understand

We investigate an extension of the Standard Model (SM) with two candidates for dark matter (DM).

• One of them is a real scalar field and the other is an Abelian gauge field.
• Except for these two, there is another beyond SM field which has unit charge under a dark $ U_{D}(1) $ gauge symmetry.
• The model is classically scale invariant and the electroweak symmetry breaks because of the loop effects.