Renormalized perturbation theory and scaling for an impurity Anderson model
Strongly Correlated Electrons
2013-04-30 v1
Abstract
We demonstrate the effectiveness of a generalized renormalized perturbational approach to calculate the induced magnetization for the single impurity Anderson model with a strong on-site interaction, using flow equations for renormalized parameters to scale from a weak correlation to a strong correlation regime. We show that, using simple approximation schemes in different parameter regimes, remarkably accurate results can be obtained for all magnetic field values by comparing the results with those from direct numerical renormalization group and Bethe ansatz calculations.
Keywords
Cite
@article{arxiv.1303.6865,
title = {Renormalized perturbation theory and scaling for an impurity Anderson model},
author = {K. Edwards and A. C. Hewson and V. Pandis},
journal= {arXiv preprint arXiv:1303.6865},
year = {2013}
}
Comments
Submitted to Physical Review B; 8 pages, 10 figures