Rigorous Schrieffer-Wolff transformation for the Anderson impurity model
Strongly Correlated Electrons
2007-05-23 v1
Abstract
With the help of computer algebra, I devise an exact unitary transformation for the Anderson impurity model which allows to kill the hybridization term in the slightly simplified case of zero chemical potential. Then I compute explicitly the outcome of this transformation. This is a rigorous version of the well known Schrieffer-Wolff transformation. It should be possible to treat the general case at the price of increased computation time.
Cite
@article{arxiv.cond-mat/0004005,
title = {Rigorous Schrieffer-Wolff transformation for the Anderson impurity model},
author = {Gilles Poirot},
journal= {arXiv preprint arXiv:cond-mat/0004005},
year = {2007}
}
Comments
33 pages, LaTeX2e using AMS symbols