Causal Propagation of a Charged Spin 3/2 Field in an External Electromagnetic Background

We present a Lagrangian for a massive, charged spin 3/2 field in a constant external electromagnetic background, which correctly propagates only physical degrees of freedom inside the light cone. The Velo-Zwanziger acausality and other pathologies such as loss of hyperbolicity or the appearance of u...

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Detalles Bibliográficos
Autores principales: Porrati, Massimo, Rahman, Rakibur
Formato: info:eu-repo/semantics/article
Lenguaje:eng
Publicado: 2009
Materias:
hep-th
Acceso en línea:http://cds.cern.ch/record/1181684
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author Porrati, Massimo
Rahman, Rakibur
author_facet Porrati, Massimo
Rahman, Rakibur
author_sort Porrati, Massimo
collection CERN
description We present a Lagrangian for a massive, charged spin 3/2 field in a constant external electromagnetic background, which correctly propagates only physical degrees of freedom inside the light cone. The Velo-Zwanziger acausality and other pathologies such as loss of hyperbolicity or the appearance of unphysical degrees of freedom are avoided by a judicious choice of non-minimal couplings. No additional fields or equations besides the spin 3/2 ones are needed to solve the problem.
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spelling cern-11816842019-09-30T06:29:59Z http://cds.cern.ch/record/1181684 eng Porrati, Massimo Rahman, Rakibur Causal Propagation of a Charged Spin 3/2 Field in an External Electromagnetic Background hep-th We present a Lagrangian for a massive, charged spin 3/2 field in a constant external electromagnetic background, which correctly propagates only physical degrees of freedom inside the light cone. The Velo-Zwanziger acausality and other pathologies such as loss of hyperbolicity or the appearance of unphysical degrees of freedom are avoided by a judicious choice of non-minimal couplings. No additional fields or equations besides the spin 3/2 ones are needed to solve the problem. info:eu-repo/grantAgreement/EC/FP7/226455 info:eu-repo/semantics/openAccess Education Level info:eu-repo/semantics/article http://cds.cern.ch/record/1181684 2009-06-09
spellingShingle hep-th
Porrati, Massimo
Rahman, Rakibur
Causal Propagation of a Charged Spin 3/2 Field in an External Electromagnetic Background
title Causal Propagation of a Charged Spin 3/2 Field in an External Electromagnetic Background
title_full Causal Propagation of a Charged Spin 3/2 Field in an External Electromagnetic Background
title_fullStr Causal Propagation of a Charged Spin 3/2 Field in an External Electromagnetic Background
title_full_unstemmed Causal Propagation of a Charged Spin 3/2 Field in an External Electromagnetic Background
title_short Causal Propagation of a Charged Spin 3/2 Field in an External Electromagnetic Background
title_sort causal propagation of a charged spin 3/2 field in an external electromagnetic background
topic hep-th
url http://cds.cern.ch/record/1181684
http://cds.cern.ch/record/1181684
work_keys_str_mv AT porratimassimo causalpropagationofachargedspin32fieldinanexternalelectromagneticbackground
AT rahmanrakibur causalpropagationofachargedspin32fieldinanexternalelectromagneticbackground

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