On the statistical mechanics of interfaces and interfacial fluctuations

U. Marini Bettolo Marconi and B.L. Gyorffy

Physica A: Statistical Mechanics and its Applications, 1989, vol. 159, issue 2, 221-238

Abstract: We present a new approximation scheme for dealing with the statistical mechanics of homogeneous and inhomogeneous systems. This new self-consistent method, based on a rigorous variational principle for the free energy, treats on equal footing the average order parameter and the fluctuations about it. It requires the choice of a trial Hamiltonian that defines an ensemble through which the thermodynamic averages can be calculated. In the present paper we apply the method to calculate the bulk phase diagram of a system described by the φ4 Hamiltonian.

Date: 1989
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:159:y:1989:i:2:p:221-238

DOI: 10.1016/0378-4371(89)90567-0

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