On the interaction of spin 3/2 particles
High Energy Physics - Phenomenology
2016-09-01 v3
Abstract
Lagrangian of a massive particle with spin 3/2 is considered in the Rarita-Schwinger formalism. We discuss implications of the contact- and the gauge-transformation on the physical content of free and interacting theories. It is shown that the ``contact-invariance'' is trivial and has no physical relevance. The requirement of the gauge-invariance of the free lagrangian fixes the off-shell lower-spin content of the spin-3/2 field. The gauge-invariance of the interaction lagrangian insures that these lower-spin components are not coupled, and (probably always) leads to theories consistent with local causality.
Cite
@article{arxiv.hep-ph/9412321,
title = {On the interaction of spin 3/2 particles},
author = {V. Pascalutsa},
journal= {arXiv preprint arXiv:hep-ph/9412321},
year = {2016}
}
Comments
4 pages, latex, no figures