Theory of Classical Fluids: Hyper-Netted Chain Approximation. III

Abstract

The hyper-netted chain approximation proposed in I is reformulated. The formulae in this approximation are rederived for the free energy, chemical potential and pair distribution function .. The pair distribution function in our approximation is shown to satisfy a new integral equation, which is compared with the Yvon, Born and Green one. Variational principle for our approximation is given. Errata for I and II are given as appendix.