Journal of Statistical Physics, Vol. 80, Nos. 5/6. 1995, p. 1165-1184.
We consider the metastable behavior of a superposition of a ferromagnetic spin system with a Glauber dynamics and stirring dynamics. Starting from configuration -1, minus spins at all lattice sites in a fixed volume under periodic boundary conditions, the process stays close to this configuration for an unpredictable time until the formation of a droplet, of spins + 1, with a certain critical size and decays to configuration + I in a relatively short time. We observe that the size of the droplet depends on the rate of exclusion.