Variational upper and lower bounds for t
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Yu.Yu. Dmitriev; M.S. Yuriev
📂
Article
📅
1969
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Elsevier Science
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English
⚖ 285 KB
The method of the evaluation of the upper and lower bounds of the second-order perturbation of the energy is described. The calculation of upper and lower bounds for the second-order perturbation of the energy in l/Z expansions for two-electron atoms are given.