  We study the gravitational wave phenomenology in models of solitosynthesis.
In such models, a first order phase transition is precipitated by a period in
which non-topological solitons with a conserved global charge (Q-balls)
accumulate charge. As such, the nucleation rate of critical bubbles differs
significantly from thermal phase transitions. In general we find that the peak
amplitude of the gravitational wave spectrum resulting from solitosynthesis is
stronger than that of a thermal phase transition and the timescale of the onset
of nonlinear plasma dynamics is comparable to Hubble. We demonstrate this
explicitly in an asymmetric dark matter model, and discuss current and future
constraints in this scenario.
