A Sum Rule for the Two-Dimensional Two-Component Plasma
arXiv:cond-mat/9907365
Abstract
In a two-dimensional two-component plasma, the second moment of the density correlation function has the simple value {12 pi [1-(gamma/4)]^2}^{-1}, where gamma is the dimensionless coupling constant. This result is derived by using analogies with critical systems.
9 pages, 1 figure, minor corrections made. To be published in J.Stat.Phys