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Particle-hole symmetry breaking perturbation in two-channel pseudospin Kondoproblem is studied by the numerical renormalization-group method. It is shownthat the repulsion between conduction electrons at the impurity site and thesingle particle potential are the relevant perturbations against theconventional non-Fermi liquid fixed point. Although the repulsion (potential)with realistic strength prevents the overscreening of pseudospin, it induces inturn a {\it real spin}, which is also overscreened again. Thus the {\it realspin} susceptibility becomes anomalous contrary to the conventional two-channelKondo problem.Comment: 4 pages (ReVTeX Ver. 3.0), 6 figures (available on request

physical review letters

Numerical Renormalization-Group Study of Particle-Hole Symmetry Breaking in Two-Channel Kondo Problem: Effect of Repulsion among Conduction Electrons and Potential Scattering