The non-additivity of long-range interactions in second-order perturbation theory in the light of spherical tensor formalism

✍ Scribed by Piotr Piecuch

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 558 KB
• Volume: 110
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(84)87078-5

✦ Synopsis

The Raylcigh-Schrijdinger perturbation treatment accompanied by a multipole expansion of the interaction potential can be used in quantum-mechanical studies of long-range intermolecular interactions. In this paper we obtain a closed espression for the anisotropic pair-wise non-additive part of the second-order interaction energy in a system of N molecules, i.e. the three-body induction term, in which the orientational dependence is simplified to the utmost. The derivation is based on spherical tensor theory.