paper

Coulomb Systems Seen as Critical Systems: Ideal Conductor Boundaries

arXiv:cond-mat/9503108 · doi:10.1007/BF02179788

Abstract

The grand potential of a classical Coulomb system has universal finite-size corrections similar to the ones which occur in the free energy of a simple critical system : the massless Gaussian field. Here, the Coulomb system is assumed to be confined by walls made of an ideal conductor material; this choice corresponds to simple (Dirichlet) boundary conditions for the Gaussian field. For a -dimensional () Coulomb system confined in a slab of thickness , the grand potential (in units of ) per unit area has the universal term . For a two-dimensional Coulomb system confined in a disk of radius , the grand potential (in units of ) has the universal term . These results, of general validity, are checked on two-dimensional solvable models.

26 pages,TEX

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