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Spin gauge symmetry in the action principle for classical relativistic particles

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons144501

Steinhoff,  Jan
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Fulltext (public)

1501.04951.pdf
(Preprint), 396KB

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Citation

Steinhoff, J. (in preparation). Spin gauge symmetry in the action principle for classical relativistic particles.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0025-039F-8
Abstract
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.