Massive spin 3/2 electrodynamics - art. no. 105031

We study the general non-minimally coupled charged massive spin 3/2 model b oth for its low energy phenomenological properties and for its unitarity, c ausality and degrees of freedom behavior. When the model is viewed as an ef fective theory, its parameters (after ensuring the correct excitation count ) are related to physical characteristics, such as the magnetic moment g fa ctor, by means of low energy theorems. We also provide the corresponding hi gher spin generalization. Separately, we consider both low and high energy unitarity, as well as the causality of our models. None (including truncate d N=2 supergravity) is free of the minimal model's acausality.