Journal of Physics A Mathematical and General

Integrability of a one-dimensional Fermi system with magnetic impurities

Edward H. Rezayi, Josef Sak

Published May 11, 1983• 5 citations

Abstract

A one-dimensional metal containing interacting electrons moving in both directions and magnetic impurities is studied. The model is shown to be integrable by the Bethe ansatz provided that an algebraic relation is satisfied between the coupling constants of the electron-electron and electron-impurity interactions.

DOI: 10.1088/0305-4470/16/7/010

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Journal of Physics A Mathematical and General

Integrability of a one-dimensional Fermi system with magnetic impurities

Edward H. Rezayi, Josef Sak

Published May 11, 1983• 5 citations

Publisher

Abstract

DOI: 10.1088/0305-4470/16/7/010

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Physical review. B, Condensed matterNov 15, 19940 citations

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{J}_{L,R}

(Kondo coupling constants) and

{V}_{L,R}

(impurity potentials) parametrized by a single parameter

c

. The integrable value of

{J}_{L,R}

runs from negative infinity to positive infinity, which allows us to study both the ferromagnetic Kondo problem and the antiferromagnetic Kondo problem in a strongly correlated electron system. Generally, there is a residual entropy for the ground state, which indicates a typical non-Fermi liquid behavior.