Natural SciencesPhysicsCondensed Matter PhysicsQuantum MechanicsTheoretical PhysicsAb Initio MethodsConfiguration InteractionConfiguration Interaction Coefficients
The consideration of the phases of the fractional-parentage coefficients allows the extension of the matrix methods to configurations with more than two equivalent electrons. Tables are given for the parentages of the terms of ${p}^{n}$ and ${d}^{n}$. Applications are made to the spin-orbit interaction of the ${d}^{n}$ terms and to the electrostatic interaction between the configurations ${d}^{n}$, ${d}^{n\ensuremath{-}1}s$, and ${d}^{n\ensuremath{-}2}{s}^{2}$. Errata in Part II are indicated.
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Giulio Racah · Physical Review · 1942 · 1.6K citations
Robert F. Bacher, S. Goudsmit · Physical Review · 1934 · 173 citations
Natural Sciences, Chemistry, Physics +14
Configuration Interaction in Complex Spectra
C. W. Ufford · Physical Review · 1933 · 31 citations