Lattice path integral approach to the one-dimensional Kondo model
arXiv:cond-mat/0405085 · doi:10.1088/0305-4470/37/25/001
Abstract
An integrable Anderson-like impurity model in a correlated host is derived from a gl(21)-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.
26 pages, 9 figures