The calculation of dispersion forces

Author: Salem L.  

Publisher: Taylor & Francis Ltd

ISSN: 1362-3028

Source: Molecular Physics, Vol.3, Iss.5, 1960-09, pp. : 441-452

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Abstract

By means of second-order perturbation theory and the use of the closure approximation, a simple closed formula is developed for the dispersion energy of interaction between spherical systems or molecules with axial symmetry. This expression contains an explicit two-electron correlation term. Agreement with experiment is most encouraging and is ascribed to the inclusion of this correlation term.