Magnetic contributions in Bekenstein type models

Autores
Kraiselburd, Lucila; Castillo, Florencia Luciana; Mosquera, Mercedes Elisa; Vucetich, Héctor
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, we analyze the spatial and time variation of the fine structure constant (α) upon the theoretical framework developed by Bekenstein (Phys. Rev. D 66, 123514 (2002)). We have computed the field ψ related to α at first order of the weak-field approximation and have also improved the estimation of the nuclear magnetic energy and, therefore, their contributions to the source term in the equation of motion of ψ. We obtained that the results are similar to the ones published in L. Kraiselburd and H. Vucetich, Int. J. Mod. Phys. E 20, 101 (2011) which were computed using the zero order of the approximation, showing that one can neglect the first order contribution to the variation of the fine structure constant. Through the comparison between our theoretical results and the observational data of the Eötvös-type experiments or the time variation of α over the cosmological time scale, we set constraints on the free parameter of the Bekenstein model, namely the Bekenstein length.
Facultad de Ciencias Astronómicas y Geofísicas
Facultad de Ciencias Exactas
Materia
Astronomía
Cosmology
Determination of fundamental constants
Experimental studies of gravity
Gravitation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/138211

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spelling Magnetic contributions in Bekenstein type modelsKraiselburd, LucilaCastillo, Florencia LucianaMosquera, Mercedes ElisaVucetich, HéctorAstronomíaCosmologyDetermination of fundamental constantsExperimental studies of gravityGravitationIn this work, we analyze the spatial and time variation of the fine structure constant (α) upon the theoretical framework developed by Bekenstein (Phys. Rev. D 66, 123514 (2002)). We have computed the field ψ related to α at first order of the weak-field approximation and have also improved the estimation of the nuclear magnetic energy and, therefore, their contributions to the source term in the equation of motion of ψ. We obtained that the results are similar to the ones published in L. Kraiselburd and H. Vucetich, Int. J. Mod. Phys. E 20, 101 (2011) which were computed using the zero order of the approximation, showing that one can neglect the first order contribution to the variation of the fine structure constant. Through the comparison between our theoretical results and the observational data of the Eötvös-type experiments or the time variation of α over the cosmological time scale, we set constraints on the free parameter of the Bekenstein model, namely the Bekenstein length.Facultad de Ciencias Astronómicas y GeofísicasFacultad de Ciencias Exactas2018-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/138211enginfo:eu-repo/semantics/altIdentifier/issn/2470-0010info:eu-repo/semantics/altIdentifier/issn/2470-0029info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.97.043526info:eu-repo/semantics/altIdentifier/arxiv/1801.08594info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:32:31Zoai:sedici.unlp.edu.ar:10915/138211Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:31.954SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Magnetic contributions in Bekenstein type models
title Magnetic contributions in Bekenstein type models
spellingShingle Magnetic contributions in Bekenstein type models
Kraiselburd, Lucila
Astronomía
Cosmology
Determination of fundamental constants
Experimental studies of gravity
Gravitation
title_short Magnetic contributions in Bekenstein type models
title_full Magnetic contributions in Bekenstein type models
title_fullStr Magnetic contributions in Bekenstein type models
title_full_unstemmed Magnetic contributions in Bekenstein type models
title_sort Magnetic contributions in Bekenstein type models
dc.creator.none.fl_str_mv Kraiselburd, Lucila
Castillo, Florencia Luciana
Mosquera, Mercedes Elisa
Vucetich, Héctor
author Kraiselburd, Lucila
author_facet Kraiselburd, Lucila
Castillo, Florencia Luciana
Mosquera, Mercedes Elisa
Vucetich, Héctor
author_role author
author2 Castillo, Florencia Luciana
Mosquera, Mercedes Elisa
Vucetich, Héctor
author2_role author
author
author
dc.subject.none.fl_str_mv Astronomía
Cosmology
Determination of fundamental constants
Experimental studies of gravity
Gravitation
topic Astronomía
Cosmology
Determination of fundamental constants
Experimental studies of gravity
Gravitation
dc.description.none.fl_txt_mv In this work, we analyze the spatial and time variation of the fine structure constant (α) upon the theoretical framework developed by Bekenstein (Phys. Rev. D 66, 123514 (2002)). We have computed the field ψ related to α at first order of the weak-field approximation and have also improved the estimation of the nuclear magnetic energy and, therefore, their contributions to the source term in the equation of motion of ψ. We obtained that the results are similar to the ones published in L. Kraiselburd and H. Vucetich, Int. J. Mod. Phys. E 20, 101 (2011) which were computed using the zero order of the approximation, showing that one can neglect the first order contribution to the variation of the fine structure constant. Through the comparison between our theoretical results and the observational data of the Eötvös-type experiments or the time variation of α over the cosmological time scale, we set constraints on the free parameter of the Bekenstein model, namely the Bekenstein length.
Facultad de Ciencias Astronómicas y Geofísicas
Facultad de Ciencias Exactas
description In this work, we analyze the spatial and time variation of the fine structure constant (α) upon the theoretical framework developed by Bekenstein (Phys. Rev. D 66, 123514 (2002)). We have computed the field ψ related to α at first order of the weak-field approximation and have also improved the estimation of the nuclear magnetic energy and, therefore, their contributions to the source term in the equation of motion of ψ. We obtained that the results are similar to the ones published in L. Kraiselburd and H. Vucetich, Int. J. Mod. Phys. E 20, 101 (2011) which were computed using the zero order of the approximation, showing that one can neglect the first order contribution to the variation of the fine structure constant. Through the comparison between our theoretical results and the observational data of the Eötvös-type experiments or the time variation of α over the cosmological time scale, we set constraints on the free parameter of the Bekenstein model, namely the Bekenstein length.
publishDate 2018
dc.date.none.fl_str_mv 2018-02
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info:eu-repo/semantics/publishedVersion
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info:eu-repo/semantics/altIdentifier/issn/2470-0029
info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.97.043526
info:eu-repo/semantics/altIdentifier/arxiv/1801.08594
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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Creative Commons Attribution 4.0 International (CC BY 4.0)
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Creative Commons Attribution 4.0 International (CC BY 4.0)
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