Hidden Integrability of a Kondo Impurity in an Unconventional Host
Strongly Correlated Electrons
2009-10-31 v1 Superconductivity
Abstract
We study a spin-1/2 Kondo impurity coupled to an unconventional host in which the density of band states vanishes either precisely at (``gapless'' systems) or on some interval around the Fermi level (``gapped''systems). Despite an essentially nonlinear band dispersion, the system is proven to exhibit hidden integrability and is diagonalized exactly by the Bethe ansatz.
Cite
@article{arxiv.cond-mat/9812086,
title = {Hidden Integrability of a Kondo Impurity in an Unconventional Host},
author = {Valery I. Rupasov},
journal= {arXiv preprint arXiv:cond-mat/9812086},
year = {2009}
}
Comments
4 pages, RevTex