Lagrangian for the Frenkel electron

Alexei A. Deriglazov

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


We found Lagrangian action which describes spinning particle on the base of non-Grassmann vector and involves only one auxiliary variable. It provides the right number of physical degrees of freedom and yields generalization of the Frenkel and BMT equations to the case of an arbitrary electromagnetic field. For a particle with anomalous magnetic moment, singularity in the relativistic equations generally occurs at the speed different from the speed of light.

Original languageEnglish
Pages (from-to)278-282
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publication statusPublished - 7 Sep 2014


  • Dirac equation
  • Semiclassical description of relativistic spin
  • Theories with constraints
  • Ultrarelativistic spinning particle

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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