Dissemin is shutting down on January 1st, 2025

Published in

American Physical Society, Physical Review Letters, 1(96)

DOI: 10.1103/physrevlett.96.016601

Links

Tools

Export citation

Search in Google Scholar

Schwinger Boson approach to the fully screened Kondo model

Journal article published in 2005 by J. Rech, P. Coleman, G. Zarand, O. Parcollet ORCID
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Upload
Green circle
Postprint: archiving allowed
Upload
Green circle
Published version: archiving allowed
Upload
Policy details
Data provided by SHERPA/RoMEO

Abstract

We apply the Schwinger boson scheme to the fully screened Kondo model and generalize the method to include antiferromagnetic interactions between ions. Our approach captures the Kondo crossover from local moment behavior to a Fermi liquid with a non-trivial Wilson ratio. When applied to the two impurity model, the mean-field theory describes the "Varma Jones" quantum phase transition between a valence bond state and a heavy Fermi liquid. ; Comment: 4 pages, 4 figures. Changes to references and text in v2