The Role of Electron-Hole Symmetry Breaking in the Kondo Problems
O. Ujsaghy, K. Vladar, G. Zarand, A. Zawadowski
Abstract
In studying the different Kondo problems it is generally assumed that breaking the electron-hole symmetry does not affect the perturbative infrared divergencies. It is shown here that, in contrast, breaking that symmetry may in some cases lead to observable modifications while in other cases it does not.
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