to the case when only $\epsilon_1$ is non-zero. As we have discussed earlier, there does not seem any reason to exclude other symmetry breaking terms in the potential. The structure of the system drastically changes when we consider $\epsilon_2$ also non-zero, as exemplified by the presence of domain walls. In this section we will consider what sorts of signatures one can expect for these more general possibilities for the symmetry breaking terms in the effective potential.

Let us first consider pion production due to different regions of misaligned condensate. Since previous studies have considered only $\epsilon_1$ non-zero, we first briefly comment on this case. It has a uniformly tilted potential with unique minimum at $\sigma > 0$. It has been suggested earlier [@rw] that, in a rapid phase change, the chiral field could roll down to different minima in different regions. In a given region, a pion condensate could form if the chiral field points in a direction different from the true minimum. As this pion field relaxes to the true minimum it will lead to coherent emission of pions.

One difficulty with getting a clean signal in this scenario is that the typical domain one expects is very small, 