Exchange energy of alkali-metal dimer cations calculated from the atomic polarizability with the Holstein-Herring method
- 1 October 1992
- journal article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 46 (7) , 3746-3752
- https://doi.org/10.1103/physreva.46.3746
Abstract
A formula relating the dipole polarizability and the exchange energy is derived for alkali-metal dimer cations. The theory is based on the fact that the unsymmetrized polarized wave function gives both the polarizability and the exchange energy through the Holstein-Herring integral. The results are seen to be remarkably accurate for large interatomic distances.Keywords
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