Single-site Anderson Model. I Diagrammatic theory
Strongly Correlated Electrons
2007-05-23 v1
Abstract
The diagrammatic theory is proposed for the strongly correlated impurity Anderson model. The strongly correlated impurity electrons are hybridized with free conduction electrons. For this system the new diagrammatic approach is formulated. The linked cluster theorem for vacuum diagrams is proved and the Dyson type equations for electron propagators of both electron subsystems are established, together with such equations for mixed propagators. The approximations based on the summing the infinite series of diagrams are proposed, which close the system of equations and permit the investigation of the system's properties.
Keywords
Cite
@article{arxiv.cond-mat/0701296,
title = {Single-site Anderson Model. I Diagrammatic theory},
author = {V. A. Moskalenko and P. Entel and D. F. Digor and L. A. Dohotaru and R. Citro},
journal= {arXiv preprint arXiv:cond-mat/0701296},
year = {2007}
}
Comments
10 pages, 5 figures, revtex4, Submitted to Phys. Rev. B