Variational upper and lower bounds for t
โ
Yu.Yu. Dmitriev; M.S. Yuriev
๐
Article
๐
1969
๐
Elsevier Science
๐
English
โ 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.