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Fock space perturbation theory
Authors:Werner Kutzelnigg
Institution:Lehrstuhl fur Theoretische Chemie, Ruhr-Universitat Bochum, D-4630 Bochum, FRG
Abstract:Diagonal and non-diagonal operators in Fock space are defined. With a universal Fock space wave operator W the Fock space hamiltonian H can be transformed to a diagonal operator L containing all relevant information about eigenvalues of H for arbitrary particle number in a simply coded form. W and L are constructed by perturbation theory, even in a spinfree form, and illustrated diagrammatically.
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