plasma expands and cools. Formation of domains in a chiral phase transition where the chiral field may not be oriented along the true vacuum has been a subject of many investigations recently. Formation of a large domain with a [*Disoriented Chiral Condensate*]{} (DCC) has been proposed by Bjorken, Kowalski and Taylor [@bkt] in the context of high multiplicity hadronic collisions. It was argued in [@bkt] that, as the chiral field relaxes to the true vacuum in such a domain, it may lead to coherent emission of pions [@bd]. A motivation for this proposal comes from Centauro events in cosmic ray collisions [@cntr]. In the context of quark-gluon plasma, Rajagopal and Wilczek proposed [@rw] that the nonequilibrium dynamics during the phase transition may produce DCC domains. They argued that long wavelength pion modes may get amplified leading to emission of coherent pions.

One difficulty in these scenarios is that one typically expects domains which are not much bigger than the pion size [@ggp]. Several studies have focussed on the possibility of getting a larger domain. Gavin, Gocksch and Pisarski have argued [@ggp] that large domains of DCC can arise if the effective masses of mesons are small, while Gavin and Müller 