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Fernández-Rañada, Antonio 2023-06-21T02:07:18Z 2023-06-21T02:07:18Z 1980-11-15 0556-2821 10.1103/PhysRevD.22.2416 https://hdl.handle.net/20.500.14352/64905 http://dx.doi.org/10.1103/PhysRevD.22.2416 http://journals.aps.org It is shown that the noncausality of the Rarita-Schwinger equation in an external electromagnetic field can be avoided by the substitution of a subsidiary constraint by a subsidiary differential equation. As the number of degrees of freedom increases, the theory represents two kinds of articles with spin l/2 and spin 3/2. Some consequences are studied. eng open access Theory of the Rarita-Schwinger field without superluminality journal article