Angular versus radial correlation effects on momentum distributions of light two-electron ions

Abstract

We investigate different correlation mechanisms for two-electron systems and compare their respective effects on various electron distributions. The simplicity of the wave functions used allows for the derivation of closed-form analytical expressions for all electron distributions. Among other features, it is shown that angular and radial correlation mechanisms have opposite effects on Compton profiles at small momenta.

22 pages, 5 figures, 3 table

References in corpus (1)

• A cluster partitioning method: determination of density matrices of solids and comparison with X-ray experiments

Cited by in corpus (2)

• Exact Kohn-Sham versus Hartree-Fock in momentum-space: examples of two-fermion systems
• Closed-form expressions for correlated density matrices: application to dispersive interactions and example of (He)2