Solution of the two-impurity Kondo model: Critical point, Fermi-liquid phase, and crossover
Solution of the two-impurity Kondo model: Critical point, Fermi-liquid phase, and crossover
An asymptotically exact solution is presented for the two-impurity Kondo model for a finite region of the parameter space surrounding the critical point. This region is located in the most interesting intermediate regime where RKKY interaction is comparable to the Kondo temperature. After several exact simplifications involving reduction to one …