Classical Coulomb systems: Screening and correlations revisited
Abstract
From the laws of macroscopic electrostatics of conductors (in particular, the existence of screening), taken as given, one can deduce universal properties for the thermal fluctuations in a classical Coulomb system at equilibrium. The universality is especially apparent in the long-range correlations of the electrical potentials and fields. The charge fluctuations are derived from the field fluctuations. This is a convenient way to study the surface charge fluctuations on a conductor with boundaries. Explicit results are given for simple geometries. The potentials and the fields have Gaussian fluctuations, except for a short-distance cutoff.
- Publication:
-
Journal of Statistical Physics
- Pub Date:
- July 1995
- DOI:
- 10.1007/BF02178367
- arXiv:
- arXiv:cond-mat/9503109
- Bibcode:
- 1995JSP....80..445J
- Keywords:
-
- Coulomb systems;
- screening;
- fluctuations;
- correlations;
- surface correlations;
- universality;
- Condensed Matter
- E-Print:
- 17 pages,TEX