Dynamic Polarizabilities and van der Waals Coefficients
- 5 January 1969
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 177 (1), 108-114
- https://doi.org/10.1103/physrev.177.108
Abstract
A simple two-point Padé approximant of the dynamic polarizability is used to generate a variety of formulas for van der Waals coefficients including the Slater-Kirkwood formula for two-body interactions and the Midzuno-Kihara formula for three-body interactions. The mathematical properties of the approximant are examined. It is shown that some formulae are bounds of the actual value while others give remarkably accurate results.Keywords
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