On the domain growth kinetics of systems with soft walls.

It has recently been suggested by Mouritsen on the basis of computer simulations that systems with soft domain walls exhibit slower domain growth than the R ~ t sup (1/2) growth law predicted by Lifshitz and Allen and Cahn. In this brief report, we underscore the reasons to believe this interpretation of the data to be incorrect and draw attention to an experiment by Pindak et al. whose results are in complete agreement with the predictions of Allen and Cahn. The reason for the unexpected growth dynamics observed in Mouritsen's simulations is suggested.