par Henneaux, Marc 
;Lucena Gomez, Gustavo ;Rahman, Mohammad Rakibur
Référence Journal of High Energy Physics, 1208, 093
Publication Publié, 2012
;Lucena Gomez, Gustavo ;Rahman, Mohammad Rakibur Référence Journal of High Energy Physics, 1208, 093
Publication Publié, 2012
Article révisé par les pairs
| Résumé : | We study the electromagnetic coupling of massless higher-spin fermions in flat space. Under the assumptions of locality and Poincaré invariance, we employ the BRST-BV cohomological methods to construct consistent parity-preserving off-shell cubic 1 - s - s vertices. Consistency and non-triviality of the deformations not only rule out minimal coupling, but also restrict the possible number of derivatives. Our findings are in complete agreement with, but derived in a manner independent from, the light-cone-formulation results of Metsaev and the string-theory-inspired results of Sagnotti-Taronna. We prove that any gauge-algebra-preserving vertex cannot deform the gauge transformations. We also show that in a local theory, without additional dynamical higher-spin gauge fields, the non-abelian vertices are eliminated by the lack of consistent second-order deformations. |
