2000/04/01 by Gilles Poirot, Poirot, Gilles
Chemistry · Engineering · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #FOS: Physical sciences #Quantum chaos and dynamical systems #Strongly Correlated Electrons (cond-mat.str-el) #Thermodynamic and Structural Properties of Metals and Alloys #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.cond-mat/0004005
33 pages, LaTeX2e using AMS symbols
arxiv created 2000/04/01 · openalex publication_date 2000/04/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.