Asymptotically exact solution of the multichannel resonant-level model

Guang-Ming Zhang, Zhao-Bin Su, Lu Yu
1994 Physical Review B (Condensed Matter)  
An asymptotically exact partition function of the multi-channel resonant-level model is obtained through Tomonaga-Luttinger bosonization. A Fermi-liquid vs non-Fermi-liquid transition, resulting from a competition between the Kondo and X-ray edge physics, is elucidated explicitly via the renormalization group theory. In the strong-coupling limit, the model is renormalized to the Toulouse limit.
doi:10.1103/physrevb.49.7759 pmid:10009525 fatcat:kza3d2h42rh2hcdbegcegcxyye