Answers are grounded in this paper and cite their sources.
Expectation values of various atomic operators are given for a 1s1s′ correlation split wavefunction, and are used in a simple variational calculation allowing for angular correlation in the 1S state. The radial and angular correlation energy contributions obtained are roughly additive.
No takes yet. Share an insight, caveat, or question.
J Killingbeck (1972) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: