Coulomb Energy Averaged over the $n\ell^N$-Atomic States with a Definite Spin

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/150399A purely group-theoretical approach (for which the symmetric group plays a central rôle), based upon the use of properties of fractional-parentage coefficients and isoscalar factors, is developed for the derivation of the Coulomb energy averaged over the states, with a definite spin, arising from an atomic configuration $n \ell^N$.12 pages, Tex FileAtomic PhysicsChemical PhysicsCondensed MatterQuantum PhysicsCoulomb Energy Averaged over the $n\ell^N$-Atomic States with a Definite Spintext