Unitarity of spin-2 theories with linearized Weyl symmetry in D=2+1 dimensions
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevD.80.085008 http://hdl.handle.net/11449/225675 |
Resumo: | Here we prove unitarity of the recently found fourth-order (in derivatives) self-dual model of spin-2 by investigating the analytic structure of its propagator. The model describes massive particles of helicity +2 (or -2) in D=2+1 dimensions and corresponds to the quadratic truncation of a higher derivative topologically massive gravity about a flat background. It is an intriguing example of a theory where a term in the propagator of the form 1/[□2(□-m2)] does not lead to ghosts. The crucial role of the linearized Weyl symmetry in getting rid of the ghosts is pointed out. We use a peculiar pair of gauge conditions which fix the linearized reparametrizations and linearized Weyl symmetries separately. © 2009 The American Physical Society. |
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Unitarity of spin-2 theories with linearized Weyl symmetry in D=2+1 dimensionsHere we prove unitarity of the recently found fourth-order (in derivatives) self-dual model of spin-2 by investigating the analytic structure of its propagator. The model describes massive particles of helicity +2 (or -2) in D=2+1 dimensions and corresponds to the quadratic truncation of a higher derivative topologically massive gravity about a flat background. It is an intriguing example of a theory where a term in the propagator of the form 1/[□2(□-m2)] does not lead to ghosts. The crucial role of the linearized Weyl symmetry in getting rid of the ghosts is pointed out. We use a peculiar pair of gauge conditions which fix the linearized reparametrizations and linearized Weyl symmetries separately. © 2009 The American Physical Society.UNESP Campus de Guaratinguetá DFQ, Avenida Dr. Ariberto Pereira da Cunha 333, CEP 12516-410, Guaratinguetá SPUNESP Campus de Guaratinguetá DFQ, Avenida Dr. Ariberto Pereira da Cunha 333, CEP 12516-410, Guaratinguetá SPUniversidade Estadual Paulista (UNESP)Dalmazi, D. [UNESP]2022-04-28T20:57:24Z2022-04-28T20:57:24Z2009-10-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1103/PhysRevD.80.085008Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 80, n. 8, 2009.1550-79981550-2368http://hdl.handle.net/11449/22567510.1103/PhysRevD.80.0850082-s2.0-70449717817Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review D - Particles, Fields, Gravitation and Cosmologyinfo:eu-repo/semantics/openAccess2024-07-01T20:51:51Zoai:repositorio.unesp.br:11449/225675Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:32:14.439597Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Unitarity of spin-2 theories with linearized Weyl symmetry in D=2+1 dimensions |
title |
Unitarity of spin-2 theories with linearized Weyl symmetry in D=2+1 dimensions |
spellingShingle |
Unitarity of spin-2 theories with linearized Weyl symmetry in D=2+1 dimensions Dalmazi, D. [UNESP] |
title_short |
Unitarity of spin-2 theories with linearized Weyl symmetry in D=2+1 dimensions |
title_full |
Unitarity of spin-2 theories with linearized Weyl symmetry in D=2+1 dimensions |
title_fullStr |
Unitarity of spin-2 theories with linearized Weyl symmetry in D=2+1 dimensions |
title_full_unstemmed |
Unitarity of spin-2 theories with linearized Weyl symmetry in D=2+1 dimensions |
title_sort |
Unitarity of spin-2 theories with linearized Weyl symmetry in D=2+1 dimensions |
author |
Dalmazi, D. [UNESP] |
author_facet |
Dalmazi, D. [UNESP] |
author_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Dalmazi, D. [UNESP] |
description |
Here we prove unitarity of the recently found fourth-order (in derivatives) self-dual model of spin-2 by investigating the analytic structure of its propagator. The model describes massive particles of helicity +2 (or -2) in D=2+1 dimensions and corresponds to the quadratic truncation of a higher derivative topologically massive gravity about a flat background. It is an intriguing example of a theory where a term in the propagator of the form 1/[□2(□-m2)] does not lead to ghosts. The crucial role of the linearized Weyl symmetry in getting rid of the ghosts is pointed out. We use a peculiar pair of gauge conditions which fix the linearized reparametrizations and linearized Weyl symmetries separately. © 2009 The American Physical Society. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-10-06 2022-04-28T20:57:24Z 2022-04-28T20:57:24Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1103/PhysRevD.80.085008 Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 80, n. 8, 2009. 1550-7998 1550-2368 http://hdl.handle.net/11449/225675 10.1103/PhysRevD.80.085008 2-s2.0-70449717817 |
url |
http://dx.doi.org/10.1103/PhysRevD.80.085008 http://hdl.handle.net/11449/225675 |
identifier_str_mv |
Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 80, n. 8, 2009. 1550-7998 1550-2368 10.1103/PhysRevD.80.085008 2-s2.0-70449717817 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review D - Particles, Fields, Gravitation and Cosmology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128244072841216 |