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Erschienen in:
1989 | OriginalPaper | Buchkapitel
On the Unitary Group and Associated Operators
verfasst von : A. Mukhopadhyay
Erschienen in: Aspects of Many-Body Effects in Molecules and Extended Systems
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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A field theoretic formulation of many-electron problems relying on the principles of the orbital unitary group adaptation of N-electron states is presented. Fock-space one- and two-operators are provided to create and annihilate such adapted electron states. The associated algebra is utilised to effect orbital level-wise factorisation of the matrix-elements of any number-conserving spinless operator such as the Hamiltonian. Other potential uses of the operators are indicated.