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Lattice path integral approach to the one-dimensional Kondo model

Michael Bortz·Andreas Kluemper
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Abstract

An integrable Anderson-like impurity model in a correlated host is derived from a gl(2$|$1)-symmetric transfer matrix by means of the Quantum-Inverse-Scattering-Method (QISM). Using the Quantum Transfer Matrix technique, free energy contributions of both the bulk and the impurity are calculated exactly. As a special case, the limit of a localized moment in a free bulk (Kondo limit) is performed in the Hamiltonian and in the free energy. In this case, high- and low-temperature scales are calculated with high accuracy.

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Michael Bortz, Andreas Kluemper. 2004-06-04. Lattice path integral approach to the one-dimensional Kondo model. https://doi.org/10.1088/0305-4470%2F37%2F25%2F001

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