Abstract
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 U 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.
Similar content being viewed by others
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Bulla, R., Hewson, A. Numerical renormalization group study of the O(3)-symmetric Anderson model. Zeitschrift für Physik B Condensed Matter 104, 333–340 (1997). https://doi.org/10.1007/s002570050458
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s002570050458