Brillouin's theorem for inter-shell correlations in the atomic Hartree-Fock method
- 1 September 1972
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 5 (9), L181-L182
- https://doi.org/10.1088/0022-3700/5/9/003
Abstract
Brillouin's theorem is shown to be valid for excitations of the kind 1s22s to 1s2s2. Consequently the simple HF wavefunction is accurate up to the 2nd order of perturbation for the field part of atomic isotope shift in usual cases.Keywords
This publication has 1 reference indexed in Scilit:
- Remarks on Brillouin's theorem in the atomic variational approachJournal of Physics B: Atomic and Molecular Physics, 1972