Natural orbitals provide a superior representation of density in small helium drops compared to Dyson orbitals from wave-function overlaps, with the distinction expected to vanish in the infinite-boson limit.
Berggren, Overlap integrals and single-particle wave functions in direct interaction theories, Nucl
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Natural and Dyson orbitals in small helium drops
Natural orbitals provide a superior representation of density in small helium drops compared to Dyson orbitals from wave-function overlaps, with the distinction expected to vanish in the infinite-boson limit.