Physical Review · 1969 · 49 citations · 9 references
Natural SciencesPhysicsAtomic PhysicsQuantum MechanicsAb Initio MethodsAtomic Energy LevelsElectron ConfigurationsElectron CorrelationMany-electron AtomsStrongly Correlated Electron SystemsEffective Nuclear ChargeEigenvaluesElectron Correlation EffectsElectron Correlation EnergyMany-body Correlation EffectsMany-body CorrelationsStrongly Correlated Electrons
The nonrelativistic eigenvalues of several states of 3-10 electron atoms are calculated to second order in the nuclear charge $Z$. It is noted that with some modifications the Hylleraas variational procedure can be employed successfully for a many-electron atom.
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