Lattice path integral approach to the one-dimensional Kondo model

Details Lattice path integral approach to the one-dimensional Kondo model Lattice path integral approach to the one-dimensional Kondo model

2004-05-05

arxiv.org/abs/cond-mat/0405085v2

Physics

Condensed Matter

Strongly Correlated Electrons

26 pages, 9 figures

Scientific paper

10.1088/0305-4470/37/25/001

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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