Semiclassical theory of the Coulomb anomaly

  • S. Levitov
  • A. V. Shytov
Condensed Matter


An effective action approach for the problem of Coulomb blocking of tunneling is discussed. The method is applied to the strong-coupling problem arising near zero bias, where perturbation theory diverges. We find an instanton for the electrodynamics in imaginary time, and express the anomaly in terms of the exact conductivity of the system σ(ω,q) and the exact interaction.

PACS numbers

73.23.Hk 73.40.Gk 72.15.Qm 


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Copyright information

© MAIK "Nauka/Interperiodica" 1997

Authors and Affiliations

  • S. Levitov
    • 1
    • 2
  • A. V. Shytov
    • 1
    • 2
  1. 1.Massachusetts Institute of TechnologyCambridgeUSA
  2. 2.L. D. Landau Institute of Theoretical Physics Russian Academy of SciencesMoscowRussia

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