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Hopf term in the action for vortices/skyrmions with odd filling of Landau levels

  • S. V. Iordanskii
Condensed Matter

Abstract

A term in the action that is of third order in the derivatives of the rotation matrix is calculated. A direct diagrammatic method in the limit of high magnetic fields is used. It is shown that the action contains the standard Hopf invariant with a coefficient corresponding to fermionic behavior of vortices/skyrmions.

PACS numbers

12.39.Dc 71.70.Di 

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Copyright information

© MAIK "Nauka/Interperiodica" 1997

Authors and Affiliations

  • S. V. Iordanskii
    • 1
  1. 1.L. D. Landau Institute of Theoretical PhysicsRussian Academy of SciencesChernogolovka, Moscow RegionRussia

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