Magnetic contributions in Bekenstein type models

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 esti...

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Autores principales: Kraiselburd, Lucila, Castillo, Florencia Luciana, Mosquera, Mercedes Elisa, Vucetich, Héctor
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Astronomía
Cosmology
Determination of fundamental constants
Experimental studies of gravity
Gravitation
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/138211
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-138211
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
Cosmology
Determination of fundamental constants
Experimental studies of gravity
Gravitation
spellingShingle Astronomía
Cosmology
Determination of fundamental constants
Experimental studies of gravity
Gravitation
Kraiselburd, Lucila
Castillo, Florencia Luciana
Mosquera, Mercedes Elisa
Vucetich, Héctor
Magnetic contributions in Bekenstein type models
topic_facet Astronomía
Cosmology
Determination of fundamental constants
Experimental studies of gravity
Gravitation
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.
format Articulo
Articulo
author Kraiselburd, Lucila
Castillo, Florencia Luciana
Mosquera, Mercedes Elisa
Vucetich, Héctor
author_facet Kraiselburd, Lucila
Castillo, Florencia Luciana
Mosquera, Mercedes Elisa
Vucetich, Héctor
author_sort Kraiselburd, Lucila
title Magnetic contributions in Bekenstein type models
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
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/138211
work_keys_str_mv AT kraiselburdlucila magneticcontributionsinbekensteintypemodels
AT castilloflorencialuciana magneticcontributionsinbekensteintypemodels
AT mosqueramercedeselisa magneticcontributionsinbekensteintypemodels
AT vucetichhector magneticcontributionsinbekensteintypemodels
bdutipo_str Repositorios
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