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Perturbation expansion of the single‐electron density matrix for the impurity problem
Author(s) -
Adawi I.
Publication year - 2009
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560060650
Subject(s) - matrix element , perturbation (astronomy) , matrix (chemical analysis) , density matrix , perturbation theory (quantum mechanics) , impurity , electron density , physics , electron , operator (biology) , quantum mechanics , mathematical physics , chemistry , quantum , chromatography , biochemistry , particle physics , repressor , transcription factor , gene
A method for expanding the single‐electron density matrix is sketched by using an expansion theorem due to Schafroth for the matrix element of a general function of an operator.
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