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A first‐principles approach to high‐ T c superconductivity. I. A consistent one‐electron theory of the N ‐electron problem
Author(s) -
Fritsche L.
Publication year - 1993
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.560480304
Subject(s) - superconductivity , electron , density functional theory , eigenvalues and eigenvectors , physics , ground state , quantum mechanics , theoretical physics , condensed matter physics
We review and update a recently developed one‐particle theory of N ‐electron systems that bears a certain resemblance to density functional ( DF ) theory and has been put forward by the present author. As distinct from DF theory, the new one‐particle scheme applies to any N ‐electron eigenstate including the ground state. For the latter case, the key equations become identical to those familiar from the Kohn–Sham version of DF theory. The theory given here constitutes the basis for a consistent treatment of normal conductivity and superconductivity, which will be discussed in Part II of this article. © 1993 John Wiley & Sons, Inc.