Self-consistent polarization propagator approximation as a modified random phase method

J. Lindesberg, P. Jørgensen, J. Oddershede, Mark A Ratner

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55 Citations (Scopus)

Abstract

A formal scheme is developed for finding the particle-hole propagator by means of a self-consistent decoupling procedure analogous to the Hartree-Fock decoupling for the electron propagator. The self-consistency comes from a contour integration of the Fourier transform of the propagator, utilizing a method introduced by Coulson. The method yields oscillator strengths and excitation energies, as well as the two-particle density matrix, which allows any one- or two-particle operator expectation value to be evaluated. The stability of the scheme is discussed, and comparisons with other, related, approximations are made.

Original languageEnglish
Pages (from-to)6213-6219
Number of pages7
JournalJournal of Chemical Physics
Volume56
Issue number12
Publication statusPublished - 1972

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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