Phantom wormholes in Einstein-Maxwell-dilaton theory
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1088/1361-6382/aa9dfc http://hdl.handle.net/11449/175703 |
Resumo: | In this paper we give an electrically charged traversable wormhole solution for the Einstein-Maxwell-dilaton theory when the dilaton is a phantom field, i.e. it has flipped sign kinetic term appearing in the action. In the limit when the charge is zero, we recover the anti-Fisher solution, which can be reduced to the Bronnikov-Ellis solution under certain choices of integration constants. The equations of motion of this theory share the same S-duality invariance of string theory, so the electrically charged solution is rotated into the magnetically charged one by applying such transformations. The scalar field is topological, so we compute its topological charge, and discuss that under appropriate boundary conditions we can have a lump, a kink, or an anti-kink profile. We determine the position of the throat, and show the embedding diagram of the wormhole. As a physical application, we apply the Gauss-Bonnet theorem to compute the deflection angle of a light-ray that passes close to the wormhole. |
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Phantom wormholes in Einstein-Maxwell-dilaton theoryexact solutionsGauss-Bonnet theoremwormholesIn this paper we give an electrically charged traversable wormhole solution for the Einstein-Maxwell-dilaton theory when the dilaton is a phantom field, i.e. it has flipped sign kinetic term appearing in the action. In the limit when the charge is zero, we recover the anti-Fisher solution, which can be reduced to the Bronnikov-Ellis solution under certain choices of integration constants. The equations of motion of this theory share the same S-duality invariance of string theory, so the electrically charged solution is rotated into the magnetically charged one by applying such transformations. The scalar field is topological, so we compute its topological charge, and discuss that under appropriate boundary conditions we can have a lump, a kink, or an anti-kink profile. We determine the position of the throat, and show the embedding diagram of the wormhole. As a physical application, we apply the Gauss-Bonnet theorem to compute the deflection angle of a light-ray that passes close to the wormhole.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Instituto de Física Teórica UNESP Universidade Estadual Paulista, R. Dr. Bento T. Ferraz 271, Bl. IIInstituto de Física Teórica UNESP Universidade Estadual Paulista, R. Dr. Bento T. Ferraz 271, Bl. IIFAPESP: 2013/00140-7Universidade Estadual Paulista (Unesp)Goulart, Prieslei [UNESP]2018-12-11T17:17:09Z2018-12-11T17:17:09Z2018-01-25info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1088/1361-6382/aa9dfcClassical and Quantum Gravity, v. 35, n. 2, 2018.1361-63820264-9381http://hdl.handle.net/11449/17570310.1088/1361-6382/aa9dfc2-s2.0-850397490972-s2.0-85039749097.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengClassical and Quantum Gravity1,809info:eu-repo/semantics/openAccess2023-11-11T06:16:57Zoai:repositorio.unesp.br:11449/175703Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:25:22.578766Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Phantom wormholes in Einstein-Maxwell-dilaton theory |
title |
Phantom wormholes in Einstein-Maxwell-dilaton theory |
spellingShingle |
Phantom wormholes in Einstein-Maxwell-dilaton theory Goulart, Prieslei [UNESP] exact solutions Gauss-Bonnet theorem wormholes |
title_short |
Phantom wormholes in Einstein-Maxwell-dilaton theory |
title_full |
Phantom wormholes in Einstein-Maxwell-dilaton theory |
title_fullStr |
Phantom wormholes in Einstein-Maxwell-dilaton theory |
title_full_unstemmed |
Phantom wormholes in Einstein-Maxwell-dilaton theory |
title_sort |
Phantom wormholes in Einstein-Maxwell-dilaton theory |
author |
Goulart, Prieslei [UNESP] |
author_facet |
Goulart, Prieslei [UNESP] |
author_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Goulart, Prieslei [UNESP] |
dc.subject.por.fl_str_mv |
exact solutions Gauss-Bonnet theorem wormholes |
topic |
exact solutions Gauss-Bonnet theorem wormholes |
description |
In this paper we give an electrically charged traversable wormhole solution for the Einstein-Maxwell-dilaton theory when the dilaton is a phantom field, i.e. it has flipped sign kinetic term appearing in the action. In the limit when the charge is zero, we recover the anti-Fisher solution, which can be reduced to the Bronnikov-Ellis solution under certain choices of integration constants. The equations of motion of this theory share the same S-duality invariance of string theory, so the electrically charged solution is rotated into the magnetically charged one by applying such transformations. The scalar field is topological, so we compute its topological charge, and discuss that under appropriate boundary conditions we can have a lump, a kink, or an anti-kink profile. We determine the position of the throat, and show the embedding diagram of the wormhole. As a physical application, we apply the Gauss-Bonnet theorem to compute the deflection angle of a light-ray that passes close to the wormhole. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-11T17:17:09Z 2018-12-11T17:17:09Z 2018-01-25 |
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/10.1088/1361-6382/aa9dfc Classical and Quantum Gravity, v. 35, n. 2, 2018. 1361-6382 0264-9381 http://hdl.handle.net/11449/175703 10.1088/1361-6382/aa9dfc 2-s2.0-85039749097 2-s2.0-85039749097.pdf |
url |
http://dx.doi.org/10.1088/1361-6382/aa9dfc http://hdl.handle.net/11449/175703 |
identifier_str_mv |
Classical and Quantum Gravity, v. 35, n. 2, 2018. 1361-6382 0264-9381 10.1088/1361-6382/aa9dfc 2-s2.0-85039749097 2-s2.0-85039749097.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Classical and Quantum Gravity 1,809 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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_ |
1808128808110260224 |