Abstract
In this work we consider the Wulff construction at zero temperature for a class of Gibbs models and study the shape of the obtained droplets. Considering zero temperature we avoid all difficulties connected with the competition between energy and entropy. It allows us to study a quite wide class of models which provides a variety of shapes. The motivations of the study come from attempts to describe isotropic properties of some models on 2D lattice at zero temperature. The studied models are binary (the spin space is 0,1) with a ferromagnetic behavior such that the potential functions are not equal to zero only for some tiles with size 3×3. In fact, we study herein droplet shapes of a subclass of the ferromagnetic models with potential functions as mentioned above. This subclass of models is defined by a condition called regularity. We call the model classified here as having regular micro-boundaries. Several examples of non-regular models are also presented.
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Descombes, X., Pechersky, E. Droplet Shapes for a Class of Models in \(\mathbb{Z}^2 \) at Zero Temperature. Journal of Statistical Physics 111, 129–169 (2003). https://doi.org/10.1023/A:1022252923753
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DOI: https://doi.org/10.1023/A:1022252923753