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On the statistical mechanics of interfaces and interfacial fluctuations

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  • Marini Bettolo Marconi, U.
  • Gyorffy, B.L.

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.

Suggested Citation

  • Marini Bettolo Marconi, U. & Gyorffy, B.L., 1989. "On the statistical mechanics of interfaces and interfacial fluctuations," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 159(2), pages 221-238.
    • Handle: RePEc:eee:phsmap:v:159:y:1989:i:2:p:221-238
    DOI: 10.1016/0378-4371(89)90567-0
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