Two energy scales and breakdown of renormalizability in the Kondo problem

  • Yu. N. Ovchinnikov
  • A. M. Dyugaev
Condensed Matter


It is shown that a second energy scale T0Tk arises in the Kondo problem. Perturbation theory is valid only in the region T > T0. For this reason, the transition from weak to strong coupling occurs at temperatures much higher than the Kondo temperature Tk.

PACS numbers

75.20.Hr 72.10.Fk 72.15.Qm 


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Copyright information

© MAIK "Nauka/Interperiodica" 1999

Authors and Affiliations

  • Yu. N. Ovchinnikov
    • 1
    • 2
  • A. M. Dyugaev
    • 1
    • 2
  1. 1.Max Planck Institute for Physics of Complex SystemsDresdenGermany
  2. 2.L. D. Landau Institute of Theoretical PhysicsRussian Academy of SciencesMoscowRussia

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