Reduced interaction matrix for doubly-excited configurations and the correlation energy by a partitioning method |
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| Authors: | William J. Taylor |
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| Affiliation: | Department of Chemistry, Ohio State University, Columbus, Ohio 43210, USA |
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| Abstract: | ![]()
Analyses of the correlation energy of an N-electron system by Nesbet and Löwdin are extended to obtain a reduced interaction matrix for doubly-excited configurations and an exact expression for correlation energy; the latter is separable in a basis diagonalizing this matrix. |
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