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Perturbation theory for degenerate states of atomic and molecular systems

✍ Scribed by L. N. Ivanov; U. I. Safronova


Publisher
John Wiley and Sons
Year
1975
Tongue
English
Weight
369 KB
Volume
9
Category
Article
ISSN
0020-7608

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✦ Synopsis


Abstract

The first few terms of the perturbation expansions for the function and the energy shift of a degenerate state of an arbitrary quantum mechanical system are obtained using the adiabatic formula. It is shown how the expansion for the secular operator may be obtained from the expansion for the function. The results are used to calculate energies of the ground and some excited states and multiplet splittings of some beryllium‐like ions.


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