Anisotropy in the two-channel Kondo model: Cross-over from non-Fermi-liquid to Fermi-liquid behavior

Abstract

We discuss the behavior of the two-channel Kondo model with channel anisotropic exchange couplings by using our recent solution of the model. This solution provides an analytic description of the interesting cross-over from a high-temperature regime, dominated by the non-Fermi-liquid behavior of the isotropic two-channel Kondo model, to a low-temperature regime characterized by the standard Fermi-liquid behavior of the single-channel Kondo model.