Conformal-field-theory approach to the two-impurity Kondo problem: Comparison with numerical renormalization-group results
Conformal-field-theory approach to the two-impurity Kondo problem: Comparison with numerical renormalization-group results
Numerical renormalization-group and conformal-field-theory work indicate that the two-impurity Kondo Hamiltonian has a non-Fermi-liquid critical point separating the Kondo-screening phase from the interimpurity singlet phase when particle-hole (P-H) symmetry is maintained. We clarify the circumstances under which this critical point occurs, pointing out that there are two types of P-H …