Variational Ansatz for effective Hamilto
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F.X. GadΓ©a; A.V. Zaitsevskii
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Article
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1992
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Elsevier Science
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English
β 454 KB
The variational intermediate Hamiltonian approach is developed on the basis of the quasi-Rayleigh-Schrijdinger quasidegenerate perturbation theory. The results of test applications to ab initio calculations of molecular excited states are discussed. The new approach is able to produce rapidly and mo