10-153 F. Manzo

Abnormal droplet formation in a metastable model in infinite volume (11515K, PDF) Sep 23, 10

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Abstract. We study a simple nucleation-and-growth model with a very rich behavior. Unlike other models, here the microscopic details of the critical cycle can influence the pattern and time of decay from a metastable state. Depending on the speed of growth, the system goes trough four different regimes: 1) both the ``shape of the critical droplet'' and the typical relaxation time are the same as in finite volume; 2) the ``shape of the critical droplet" and its ``formation rate'' are the same as in finite volume but the ``relaxation time'' is shorter; 3) the ``shape of the critical droplet" is the same as in finite volume while the nucleation rate and the ``relaxation time'' are smaller; 4) the ``shape of the critical droplet" is different from what we have in finite volume and its formation rate is smaller than the formation rate of the finite-volume droplet.

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