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Spin gauge symmetry in the action principle for classical relativistic particles

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 نشر من قبل Jan Steinhoff
 تاريخ النشر 2015
  مجال البحث فيزياء
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 تأليف Jan Steinhoff




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We suggest that the physically irrelevant choice of a representative worldline of a relativistic spinning particle should correspond to a gauge symmetry in an action approach. Using a canonical formalism in special relativity, we identify a (first-class) spin gauge constraint, which generates a shift of the worldline together with the corresponding transformation of the spin on phase space. An action principle is formulated for which a minimal coupling to fields is straightforward. The electromagnetic interaction of a monopole-dipole particle is constructed explicitly.



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