Diagrammatic many-body perturbation expansion for atoms and molecules: II. Second-order and third-order ladder energies

Title of program: MBPT LADDER DIAGRAMS Catalogue Id: ACXG_v1_0 Nature of problem The determination of perturbative solutions to the non-relativistic Schrodinger equation for the electronic structure of atomic and molecular systems is considered within the Born-Oppenheimer approximation. Versions of this program held in the CPC repository in Mendeley Data ACXG_v1_0; MBPT LADDER DIAGRAMS; 10.1016/0010-4655(78)90051-6 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)