title: Poor man's understanding of kinks originating from strong electronic correlations.
abstract: By means of dynamical mean field theory calculations, it was recently discovered that kinks generically arise in strongly correlated systems, even in the absence of external bosonic degrees of freedoms such as phonons. However, the physical mechanism behind these kinks remained unclear. On the basis of the perturbative and numerical renormalization group theory, we herewith identify these kinks as the effective Kondo energy scale of the interacting lattice system which is shown to be smaller than the width of the central peak.
authors.affiliation: Institute of Solid State Physics, Vienna University of Technology, A-1040 Vienna, Austria.
authors.forename: K
authors.initials: K
authors.lastname: Held
authors.affiliation: Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
authors.forename: R
authors.initials: R
authors.lastname: Peters
authors.affiliation: Institute of Solid State Physics, Vienna University of Technology, A-1040 Vienna, Austria.
authors.forename: A
authors.initials: A
authors.lastname: Toschi