Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/9039
Title: On the contribution of the diamagnetic coupling term to the two-body retarded dispersion interaction
Authors: SALAM, Akbar 
Issue Date: 2000
Publisher: IOP PUBLISHING LTD
Source: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 33(12). p. 2181-2193
Abstract: The contribution of the leading diamagnetic coupling term to the retarded dispersion interaction between a pair of neutral atoms or randomly oriented molecules in the ground electronic state, is investigated using the multipolar formalism of non-relativistic quantum electrodynamics. Within this framework the interaction energy is viewed as arising from the exchange of two virtual photons and is calculated using conventional time-dependent perturbation theory. Explicit expressions are presented for energy shifts involving the interaction of a diamagnetic species with (a) an electric-dipole polarizable body, (b) a magnetic-dipole susceptible body, (c) an electric-quadrupole polarizable body and (d) another diamagnetic species. The resulting potentials obtained are applicable for all separation distances beyond the electron overlap region. Also given are the limiting forms of the energy shift at large and small inter-atomic/molecular separations.
Notes: Univ London Univ Coll, Dept Chem, London WC1H 0AJ, England.
Document URI: http://hdl.handle.net/1942/9039
ISI #: 000088232500010
Category: A1
Type: Journal Contribution
Validations: ecoom 2001
Appears in Collections:Research publications

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