Method for Calculating Matrix Elements between Configurations with Several OpenShells
- 16 August 1965
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 139 (4A) , A1042-A1048
- https://doi.org/10.1103/physrev.139.a1042
Abstract
A simple procedure applicable to a digital computer is given for calculating matrix elements of - and -type operators between configurations that involve several partially filled or shells. The new procedure uses "partially coupled" basis functions, instead of traditional "uncoupled" (determinantal) or "coupled" basis functions, and may provide a simpler method for calculating configuration mixing in highly excited states of very complex atoms or for calculating nuclear shell-model energies.
Keywords
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