Schwinger variational principle applied to long-range potentials

Maile E. Smith, Robert R. Lucchese, and Vincent McKoy
Phys. Rev. A 29, 1857 – Published 1 April 1984
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Abstract

We discuss an adaptation of the Schwinger variational principle which is particularly suitable for dealing with long-range potentials. The method treats the direct interaction potential exactly by numerical integration and assumes a separable representation of the Schwinger type for the exchange potential. The method should be very effective for obtaining the electronic continuum solutions of strongly polar molecular ions. The related photoionization cross sections can be shown to be variationally stable.

  • Received 2 September 1983

DOI:https://doi.org/10.1103/PhysRevA.29.1857

©1984 American Physical Society

Authors & Affiliations

Maile E. Smith, Robert R. Lucchese*, and Vincent McKoy

  • Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125

  • *Present address: Department of Chemistry, Texas A&M University, College Station TX 77843.

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Issue

Vol. 29, Iss. 4 — April 1984

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