1994/12/19 by V. Pascalutsa, Vladimir Pascalutsa, Pascalutsa, V.
Physics and Astronomy · #Causality (physics) #Classical mechanics #FOS: Physical sciences #Formalism (music) #Gauge (firearms) #Gauge symmetry #Gauge theory #High Energy Physics - Phenomenology (hep-ph) #Introduction to gauge theory #Lagrangian #Mathematical physics #Physics #Quantum and Classical Electrodynamics #Quantum mechanics #Radioactive Decay and Measurement Techniques #Relativity and Gravitational Theory #Spin (aerodynamics) #Theoretical physics #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9412321
published in arXiv (Cornell University) (Cornell University) · 4 pages, latex, no figures
openalex publication_date 1994/12/19 · arxiv created 1996/07/09 · arxiv updated 2016/09/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.