Abstract
An analytical method is formulated for calculating the first-order correlational energy from the electron interaction, taking account of lag effects. Explicit analytical expressions are obtained for radial matrix elements. The nonrelativistic limit is investigated.
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V. G. Pal'chikov, Izv. Vyssh. Uchebn. Zaved., Fiz., No. 4, 80 (1983).
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 10, pp. 33–35, October, 1985.
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Pal'chikov, V.G. Relativistic calculation of correlational energy for a helium-like atom. Soviet Physics Journal 28, 795–797 (1985). https://doi.org/10.1007/BF00897951
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DOI: https://doi.org/10.1007/BF00897951