Self-Consistent Average Green's Function in Random Lattices: A Generalized Coherent-Potential Approximation () and Its Diagrammatic Equivalents
- 15 December 1971
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 4 (12), 4354-4363
- https://doi.org/10.1103/physrevb.4.4354
Abstract
We describe a simple generalization of the coherent-potential approximation that is exactly equivalent to the self-contained cumulant expansions and the self-consistent diagrammatic-resummation techniques. A detailed analysis of these different methods for the pair case is given.Keywords
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