High-order direct correlation functions of uniform classical liquids

A. R. Denton and N. W. Ashcroft
Phys. Rev. A 39, 426 – Published 1 January 1989
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Abstract

Analytic approximations for the third- and higher-order direct correlation functions of uniform classical liquids are presented. These are derived from a weighted-density approximation for the one-particle direct correlation function of a nonuniform liquid which requires as input only the two-particle function of the corresponding uniform liquid. The three-particle result is shown to have the same accuracy as two recently proposed approximations, but has a much simpler form. The four- and five-particle results are new, and in principle can be tested by simulation methods.

  • Received 21 July 1988

DOI:https://doi.org/10.1103/PhysRevA.39.426

©1989 American Physical Society

Authors & Affiliations

A. R. Denton and N. W. Ashcroft

  • Laboratory of Atomic and Solid State Physics and Materials Science Center, Cornell University, Ithaca, New York 14853-2501

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Vol. 39, Iss. 1 — January 1989

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