Baryogenesis via relativistic bubble walls

Understand

We present a novel mechanism which leads to the baryon asymmetry generation during the strong first order phase transition.

• If the bubble wall propagates with ultra-relativistic velocities, it has been shown that it can produce states much heavier than the scale of the transition and that those states are then out-of-equilibrium.
• In this paper, we show that the production mechanism can also induce CP-violation at one-loop level.
• We calculate those CP violating effects during the heavy particle production and show, that combined with baryon number violating interactions, those can lead to successful baryogenesis.