  Prepare a two-species BEC in a perfectly phase-mixed state. By applying Rabi
drives, one can tune the range of wavelengths of phase-separating excitations
that are dynamically unstable. Yada yada yada, this determines the
characteristic sizes of the eventual spin domains. The trapping potential is
neglected because it makes life hard, but of course this is a terrible
approximation, and the results are of only inspirational value. Since this is
thus a rather trivial calculation, the very modest increase in kudos that might
accrue from journal publication does not seem to outweigh the grief of having
to change the title.
