Long-Wavelength Analysis of the Direct Correlation Function for Coulomb Liquids

Abstract

The long-wavelength structure of the cooperative part [ctilde] _c (k) of the direct correlation function [ctilde](k) = [ctilde] _p (k) + [ctilde] _c (k) is inferred by comparing its known potential part [ctilde] _p (k) (Kumar et al., Phys. Chem. Liquids, 11, 271 (1982)) with a similarly structured part which quite naturally emerges from the Ornstein-Zernike relation plus the first Born-Green-Yvon equation for the one-component plasma.

Key Words:

• One-component plasma
• compressibility