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Combined CI+MBPT calculations of energy levels and transition amplitudes in Be, Mg, Ca, and Sr

I. M. Savukov·W. R. Johnson
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Abstract

Configuration interaction (CI) calculations in atoms with two valence electrons, carried out in the V(N-2) Hartree-Fock potential of the core, are corrected for core-valence interactions using many-body perturbation theory (MBPT). Two variants of the mixed CI+MBPT theory are described and applied to obtain energy levels and transition amplitudes for Be, Mg, Ca, and Sr.

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I. M. Savukov, W. R. Johnson. 2001-11-03. Combined CI+MBPT calculations of energy levels and transition amplitudes in Be, Mg, Ca, and Sr. https://doi.org/10.1103/physreva.65.042503

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