Cusp Conditions for Molecular Wavefunctions
- 15 July 1966
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 45 (2) , 556-559
- https://doi.org/10.1063/1.1727605
Abstract
The conditions on the behavior of a wavefunction for a system of charged particles near the coalescence of any two of them are derived. The new features of the derivation are: (a) the fixed‐nucleus approximation is not required; (b) the wavefunction is not spherically averaged; (c) the wavefunction can have a node at the singularity; and (d) the consequences of the two particles being identical are examined. In addition to the general treatment, the electron—nucleus cusp conditions for diatomic molecules are discussed in detail.Keywords
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