It is shown that a Rarita-Schwinger (spin 3/2) particle in an external electromagnetic field besides exhibiting acausal propagation also violates tree unitarity for semi-classical scattering. This suggests a general connection between acausal propagation and the violation of tree unitarity for high-spin (≥1) fields. © 1984 Società Italiana di Fisica.
Piccinini F., Venturi G., Zucchini R. (1984). Acausality and violation of S-matrix unitarity for Rarita-Schwinger particles in an external electromagnetic potential. LETTERE AL NUOVO CIMENTO DELLA SOCIETÀ ITALIANA DI FISICA, 41(16), 536-540 [10.1007/BF02739499].
Acausality and violation of S-matrix unitarity for Rarita-Schwinger particles in an external electromagnetic potential
Venturi G.Secondo
;Zucchini R.Ultimo
1984
Abstract
It is shown that a Rarita-Schwinger (spin 3/2) particle in an external electromagnetic field besides exhibiting acausal propagation also violates tree unitarity for semi-classical scattering. This suggests a general connection between acausal propagation and the violation of tree unitarity for high-spin (≥1) fields. © 1984 Società Italiana di Fisica.File in questo prodotto:
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