Unimodular gravity theory with external sources in a Lorentz-symmetry breaking scenario
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevD.99.024040 http://hdl.handle.net/11449/188685 |
Resumo: | This paper is dedicated to the study of interactions between stationary field sources for the linearized unimodular gravity or the Weyl plus transverse diffeomorphism (WTDIFF) theory in a model that exhibits Lorentz-symmetry breaking due to the presence of the linearized topological Chern-Simons term in 3+1 dimensions, where the Lorentz symmetry breaking is caused by a single background vector vμ. Since the background vector is very tiny, we treat it perturbatively up to second order and we focus on physical phenomena which have no counterpart in standard WTDIFF theory. We consider effects related to field sources describing pointlike particles and cosmic strings. We show that in a Lorentz-violating scenario the interaction between external sources lead to numerically different results for the linerarized Eintein-Hilbert and WTDIFF theories; however, both results are qualitatively similar and can be equalized after a rescaling of the Lorentz-breaking source term which makes an experimental distinction impossible at leading order in pertubation theory as far as point particles and cosmic strings are concerned. |
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Repositório Institucional da UNESP |
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spelling |
Unimodular gravity theory with external sources in a Lorentz-symmetry breaking scenarioThis paper is dedicated to the study of interactions between stationary field sources for the linearized unimodular gravity or the Weyl plus transverse diffeomorphism (WTDIFF) theory in a model that exhibits Lorentz-symmetry breaking due to the presence of the linearized topological Chern-Simons term in 3+1 dimensions, where the Lorentz symmetry breaking is caused by a single background vector vμ. Since the background vector is very tiny, we treat it perturbatively up to second order and we focus on physical phenomena which have no counterpart in standard WTDIFF theory. We consider effects related to field sources describing pointlike particles and cosmic strings. We show that in a Lorentz-violating scenario the interaction between external sources lead to numerically different results for the linerarized Eintein-Hilbert and WTDIFF theories; however, both results are qualitatively similar and can be equalized after a rescaling of the Lorentz-breaking source term which makes an experimental distinction impossible at leading order in pertubation theory as far as point particles and cosmic strings are concerned.UNESP - Campus de Guaratinguetá - DFQ, Avenida Dr. Ariberto Pereira da Cunha 333UNESP - Campus de Guaratinguetá - DFQ, Avenida Dr. Ariberto Pereira da Cunha 333Universidade Estadual Paulista (Unesp)Borges, L. H.C. [UNESP]Dalmazi, D. [UNESP]2019-10-06T16:15:52Z2019-10-06T16:15:52Z2019-01-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1103/PhysRevD.99.024040Physical Review D, v. 99, n. 2, 2019.2470-00292470-0010http://hdl.handle.net/11449/18868510.1103/PhysRevD.99.0240402-s2.0-85060882700Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review Dinfo:eu-repo/semantics/openAccess2024-07-01T20:52:16Zoai:repositorio.unesp.br:11449/188685Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:13:24.144935Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Unimodular gravity theory with external sources in a Lorentz-symmetry breaking scenario |
title |
Unimodular gravity theory with external sources in a Lorentz-symmetry breaking scenario |
spellingShingle |
Unimodular gravity theory with external sources in a Lorentz-symmetry breaking scenario Borges, L. H.C. [UNESP] |
title_short |
Unimodular gravity theory with external sources in a Lorentz-symmetry breaking scenario |
title_full |
Unimodular gravity theory with external sources in a Lorentz-symmetry breaking scenario |
title_fullStr |
Unimodular gravity theory with external sources in a Lorentz-symmetry breaking scenario |
title_full_unstemmed |
Unimodular gravity theory with external sources in a Lorentz-symmetry breaking scenario |
title_sort |
Unimodular gravity theory with external sources in a Lorentz-symmetry breaking scenario |
author |
Borges, L. H.C. [UNESP] |
author_facet |
Borges, L. H.C. [UNESP] Dalmazi, D. [UNESP] |
author_role |
author |
author2 |
Dalmazi, D. [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Borges, L. H.C. [UNESP] Dalmazi, D. [UNESP] |
description |
This paper is dedicated to the study of interactions between stationary field sources for the linearized unimodular gravity or the Weyl plus transverse diffeomorphism (WTDIFF) theory in a model that exhibits Lorentz-symmetry breaking due to the presence of the linearized topological Chern-Simons term in 3+1 dimensions, where the Lorentz symmetry breaking is caused by a single background vector vμ. Since the background vector is very tiny, we treat it perturbatively up to second order and we focus on physical phenomena which have no counterpart in standard WTDIFF theory. We consider effects related to field sources describing pointlike particles and cosmic strings. We show that in a Lorentz-violating scenario the interaction between external sources lead to numerically different results for the linerarized Eintein-Hilbert and WTDIFF theories; however, both results are qualitatively similar and can be equalized after a rescaling of the Lorentz-breaking source term which makes an experimental distinction impossible at leading order in pertubation theory as far as point particles and cosmic strings are concerned. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T16:15:52Z 2019-10-06T16:15:52Z 2019-01-15 |
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.99.024040 Physical Review D, v. 99, n. 2, 2019. 2470-0029 2470-0010 http://hdl.handle.net/11449/188685 10.1103/PhysRevD.99.024040 2-s2.0-85060882700 |
url |
http://dx.doi.org/10.1103/PhysRevD.99.024040 http://hdl.handle.net/11449/188685 |
identifier_str_mv |
Physical Review D, v. 99, n. 2, 2019. 2470-0029 2470-0010 10.1103/PhysRevD.99.024040 2-s2.0-85060882700 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review D |
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_ |
1808128775423000576 |