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Behaviour of Charged Spinning Massless Particles

Department of Physics, Federal University of Viçosa, UFV, BR-36570-900 Viçosa, MG , Brazil
*
Author to whom correspondence should be addressed.
Current address: Brasilian Center for Research in Physics, CBPF, BR-22290-180 Rio de Janeiro, Brazil.
Current address: Institute of Physical Research, Casilla 8635, Universidad Mayor de San Andrés, UMSA, La Paz, Bolivia.
Symmetry 2018, 10(1), 2; https://doi.org/10.3390/sym10010002
Received: 6 November 2017 / Revised: 14 December 2017 / Accepted: 19 December 2017 / Published: 22 December 2017
(This article belongs to the Special Issue Symmetry in Quantum Field Theory)
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Abstract

We revisit the classical theory of a relativistic massless charged point particle with spin and interacting with an external electromagnetic field. In particular, we give a proper definition of its kinetic energy and its total energy, the latter being conserved when the external field is stationary. We also write the conservation laws for the linear and angular momenta. Finally, we find that the particle’s velocity may differ from c as a result of the spin—electromagnetic field interaction, without jeopardizing Lorentz invariance. View Full-Text
Keywords: Lorentz symmetry; massless charged particle; spinning particle; relativistic particle Lorentz symmetry; massless charged particle; spinning particle; relativistic particle
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Morales, I.; Neves, B.; Oporto, Z.; Piguet, O. Behaviour of Charged Spinning Massless Particles. Symmetry 2018, 10, 2.

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