Electron Correlations at Metallic Densities. V

P. Vashishta and K. S. Singwi
Phys. Rev. B 6, 875 – Published 1 August 1972; Erratum Phys. Rev. B 6, 4883 (1972)
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Abstract

In this paper we present a modification of an earlier theory of Singwi et al. of electron correlations at metallic densities. The modification consists in allowing for the change of the pair correlation function in an external weak field via the density derivative of the equilibrium pair correlation function. This results in a new expression for the local-field correction. The present theory has the merit of satisfying almost exactly the compressibility sum rule and of giving a satisfactory pair correlation function. Results of self-consistent numerical calculations for the static pair correlation function, correlation energy, compressibility, and plasmon dispersion relation for the electron liquid in the metallic-density range are presented. For those interested in the application of the results of the present paper, numerical values of the local-field correction as a function of wave number have been tabulated in the density range rs=16.

  • Received 20 December 1971

DOI:https://doi.org/10.1103/PhysRevB.6.875

©1972 American Physical Society

Erratum

Electron Correlations at Metallic Densities

V, P. Vashishta and K. S. Singwi
Phys. Rev. B 6, 4883 (1972)

Authors & Affiliations

P. Vashishta* and K. S. Singwi

  • Physics Department, Northwestern University, Evanston, Illinois 60201 and Argonne National Laboratory, Argonne, Illinois 60439

  • *Present address: Physics Department, University of Western Michigan, Kalamazoo, Mich. 49001.
  • Work partly supported by the Advanced Research Projects Agency of the Department of Defense through the Northwestern University Materials Research Center and by the National Science Foundation under Contract No. GP-11054.

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Issue

Vol. 6, Iss. 3 — 1 August 1972

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