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- W2055454137 abstract "A novel approach is developed for optimizing molecular orbitals within the context of a multiconfiguration self-consistent-field problem. The MCSCF wave function is determined through a sequence of eigenvalue problems in the multiconfiguration space and the single-excitation space. They are used to iteratively improve the natural orbitals, which in turn are related, by successively improved transformations, to the MCSCF orbitals. The mathematical problems arising out of this general concept are solved and the computational implementation is discussed. In many applications the method has proven itself as a powerful approach in forcing rapid convergence. Adaptation to spin and spatial symmetry is maintained throughout and the procedure is applicable to excited states as well as to ground states." @default.
- W2055454137 created "2016-06-24" @default.
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- W2055454137 date "1979-11-01" @default.
- W2055454137 modified "2023-10-12" @default.
- W2055454137 title "MCSCF optimization through combined use of natural orbitals and the brillouin-levy-berthier theorem" @default.
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- W2055454137 doi "https://doi.org/10.1002/qua.560160511" @default.
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