The formalism of second quantization is used to calculate matrix elements of the Coulomb operator between configurations having several open shells. Antisymmetric many-particle states are formed by products of creation operators acting on the vacuum state, and the Coulomb interaction is written as a product of creation and destruction operators. Manipulation of all of these operators leads to results equivalent to those obtained by Fano.
No takes yet. Share an insight, caveat, or question.
Lloyd Armstrong (1968) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: