Numerical Renormalization Group Study of the O(3)-symmetric Anderson Model
强关联电子
2009-10-30 v1
摘要
We use the numerical renormalization group method to study the O(3)-symmetric version of the impurity Anderson model of Coleman and Schofield. This model is of general interest because it displays both Fermi liquid and non-Fermi liquid behaviour, and in the large limit can be related to the compactified two channel Kondo model of Coleman, Ioffe and Tsvelik. We calculate the thermodynamics for a parameter range which covers the full range of behaviour of the model. We find a non-Fermi liquid fixed point in the isotropic case which is unstable with respect to channel anisotropy.
引用
@article{arxiv.cond-mat/9701152,
title = {Numerical Renormalization Group Study of the O(3)-symmetric Anderson Model},
author = {R. Bulla and A. C. Hewson},
journal= {arXiv preprint arXiv:cond-mat/9701152},
year = {2009}
}
备注
10 pages, LaTeX, 8 figures includes as eps-files