Year: 1972

Authors: G. Gallavotti, A. Martin-Lof

Title: Surface Tension in the Ising Model
Communication in Mathematical Physics, 25, 87--126, 1972

Abstract: We investigate the problem of a microscopic definition of the surface of separation between two phases in the special case of the 2-dimensional Ising model. We show how this leads to a definition of the surface tension which appears, in this context, as the logarithm of a partition function over a set of random surfaces. We also discuss the more general problem of defining the surface tension in an Ising ferromagnet with arbitrarily extended attractive interaction.

Key words:  Statistical Mechanics, Surface Tension, Ising Model, Thermodynamic Limit, Lattice Gas

Giovanni Gallavotti
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