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Poor man's scaling: Kondo and Coqblin-Schrieffer models

Friday, February 23, 2018 - 12:00
Donostia International Physics Center
Eugene Kogan, Bar-Ilan University, Israel
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We derive the general scaling
equation to the second order for a model, describing any point scatterer, with
degenerate energy levels, embedded into a gas of itinerant electrons. We show
how the obtained previously scaling equations for spin-anisotropic Kondo model
follow from it. We introduce the notion of the anisotropic Coqblin–Schrieffer
model. We apply the general equation to derive scaling equation for that model
and integrate analytically the important particular case of that


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