Thermodynamics in variable speed of light theories

Autores
Racker, Juan; Sisterna, Pablo D.; Vucetich, Héctor
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The perfect fluid in the context of a covariant variable speed of light theory proposed by J. Magueijo is studied. On the one hand the modified first law of thermodynamics together with a recipe to obtain equations of state are obtained. On the other hand the Newtonian limit is performed to obtain the nonrelativistic hydrostatic equilibrium equation for the theory. The results obtained are used to determine the time variation of the radius of Mercury induced by the variability of the speed of light (c), and the scalar contribution to the luminosity of white dwarfs. Using a bound for the change of that radius and combining it with an upper limit for the variation of the fine structure constant, a bound on the time variation of c is set. An independent bound is obtained from luminosity estimates for Stein 2015B.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Física
Variable speed of light
Physics
Hydrostatic equilibrium
White dwarf
Newtonian limit
Fine-structure constant
Mathematical physics
First law of thermodynamics
Perfect fluid
Quantum mechanics
Covariant transformation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/126147
Acceder
id SEDICI_90769a26fc8009abd3fd1efb2d92f7eb
oai_identifier_str oai:sedici.unlp.edu.ar:10915/126147
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Thermodynamics in variable speed of light theoriesRacker, JuanSisterna, Pablo D.Vucetich, HéctorFísicaVariable speed of lightPhysicsHydrostatic equilibriumWhite dwarfNewtonian limitFine-structure constantMathematical physicsFirst law of thermodynamicsPerfect fluidQuantum mechanicsCovariant transformationThe perfect fluid in the context of a covariant variable speed of light theory proposed by J. Magueijo is studied. On the one hand the modified first law of thermodynamics together with a recipe to obtain equations of state are obtained. On the other hand the Newtonian limit is performed to obtain the nonrelativistic hydrostatic equilibrium equation for the theory. The results obtained are used to determine the time variation of the radius of Mercury induced by the variability of the speed of light (c), and the scalar contribution to the luminosity of white dwarfs. Using a bound for the change of that radius and combining it with an upper limit for the variation of the fine structure constant, a bound on the time variation of c is set. An independent bound is obtained from luminosity estimates for Stein 2015B.Facultad de Ciencias Astronómicas y Geofísicas2009-10-26info: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/10915/126147enginfo:eu-repo/semantics/altIdentifier/issn/1550-7998info:eu-repo/semantics/altIdentifier/issn/1550-2368info:eu-repo/semantics/altIdentifier/arxiv/0711.0797info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.80.083526info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:30:17Zoai:sedici.unlp.edu.ar:10915/126147Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:30:18.105SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Thermodynamics in variable speed of light theories
title Thermodynamics in variable speed of light theories
spellingShingle Thermodynamics in variable speed of light theories
Racker, Juan
Física
Variable speed of light
Physics
Hydrostatic equilibrium
White dwarf
Newtonian limit
Fine-structure constant
Mathematical physics
First law of thermodynamics
Perfect fluid
Quantum mechanics
Covariant transformation
title_short Thermodynamics in variable speed of light theories
title_full Thermodynamics in variable speed of light theories
title_fullStr Thermodynamics in variable speed of light theories
title_full_unstemmed Thermodynamics in variable speed of light theories
title_sort Thermodynamics in variable speed of light theories
dc.creator.none.fl_str_mv Racker, Juan
Sisterna, Pablo D.
Vucetich, Héctor
author Racker, Juan
author_facet Racker, Juan
Sisterna, Pablo D.
Vucetich, Héctor
author_role author
author2 Sisterna, Pablo D.
Vucetich, Héctor
author2_role author
author
dc.subject.none.fl_str_mv Física
Variable speed of light
Physics
Hydrostatic equilibrium
White dwarf
Newtonian limit
Fine-structure constant
Mathematical physics
First law of thermodynamics
Perfect fluid
Quantum mechanics
Covariant transformation
topic Física
Variable speed of light
Physics
Hydrostatic equilibrium
White dwarf
Newtonian limit
Fine-structure constant
Mathematical physics
First law of thermodynamics
Perfect fluid
Quantum mechanics
Covariant transformation
dc.description.none.fl_txt_mv The perfect fluid in the context of a covariant variable speed of light theory proposed by J. Magueijo is studied. On the one hand the modified first law of thermodynamics together with a recipe to obtain equations of state are obtained. On the other hand the Newtonian limit is performed to obtain the nonrelativistic hydrostatic equilibrium equation for the theory. The results obtained are used to determine the time variation of the radius of Mercury induced by the variability of the speed of light (c), and the scalar contribution to the luminosity of white dwarfs. Using a bound for the change of that radius and combining it with an upper limit for the variation of the fine structure constant, a bound on the time variation of c is set. An independent bound is obtained from luminosity estimates for Stein 2015B.
Facultad de Ciencias Astronómicas y Geofísicas
description The perfect fluid in the context of a covariant variable speed of light theory proposed by J. Magueijo is studied. On the one hand the modified first law of thermodynamics together with a recipe to obtain equations of state are obtained. On the other hand the Newtonian limit is performed to obtain the nonrelativistic hydrostatic equilibrium equation for the theory. The results obtained are used to determine the time variation of the radius of Mercury induced by the variability of the speed of light (c), and the scalar contribution to the luminosity of white dwarfs. Using a bound for the change of that radius and combining it with an upper limit for the variation of the fine structure constant, a bound on the time variation of c is set. An independent bound is obtained from luminosity estimates for Stein 2015B.
publishDate 2009
dc.date.none.fl_str_mv 2009-10-26
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/126147
url http://sedici.unlp.edu.ar/handle/10915/126147
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1550-7998
info:eu-repo/semantics/altIdentifier/issn/1550-2368
info:eu-repo/semantics/altIdentifier/arxiv/0711.0797
info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.80.083526
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1844616182191095808
score 13.070432

Publicaciones similares