Two-scale analysis of the SU(N) kondo model
We show how to resolve coherent low-energy features embedded in a broad high-energy background by use of a fully self-consistent calculation for composite particle operators. The method generalizes the formulation of Roth, which linearizes the dynamics of composite operators at any energy scale. Self-consistent equations are derived and analyzed in the case of the single-impurity SU(N) Kondo model.
Villani
D
Serin Physics Laboratory, Rutgers University, Piscataway, New Jersey 08855-0849, USA.
Lange
E
Avella
A
Kotliar
G