  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. Two models based on this mechanism are constructed and their
phenomenology is discussed. Stochastic gravitational wave signals turn out to
be generic signatures of this type of models.
