Demonstration of noncausality for the Rarita-Schwinger equation
M. Hortaçsu · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 1974
Using the Rarita-Schwinger equation for a spin-3/2 particle in a a constant magnetic field, we explicitly calculate the propagator in 2 + 1 dimensions. From the behavior of the propagator, it is seen that the propagation is noncausal.