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Perturbation expansion of the single-electron density matrix for the impurity problem

✍ Scribed by I. Adawi


Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
97 KB
Volume
6
Category
Article
ISSN
0020-7608

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## Abstract A method of calculation of the correlation energy is proposed, which includes the superposition of configurations and the two particle approach. This method is based on the density matrix formalism. The approximate, but __N__‐representable expressions for the reduced density matrices ar