Spatial variation of fundamental constants: testing models with thermonuclear supernovae

Since Dirac stated his Large Number Hypothesis the space-time variation of fundamental constants has been an active subject of research. Here we analyze the possible spatial variation of two fundamental constants: the fine structure constant α and the speed of light c. We study the effects of such v...

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Detalles Bibliográficos
Autores principales:	Negrelli, Carolina Soledad, Kraiselburd, Lucila, Landau, Susana J., García-Berro, Enrique
Formato:	Articulo Preprint
Lenguaje:	Inglés
Publicado:	2018
Materias:	Física Quasars: absorption lines Cosmology: miscellaneous Supernovae: general
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/129331
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-129331
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física Quasars: absorption lines Cosmology: miscellaneous Supernovae: general
spellingShingle	Física Quasars: absorption lines Cosmology: miscellaneous Supernovae: general Negrelli, Carolina Soledad Kraiselburd, Lucila Landau, Susana J. García-Berro, Enrique Spatial variation of fundamental constants: testing models with thermonuclear supernovae
topic_facet	Física Quasars: absorption lines Cosmology: miscellaneous Supernovae: general
description	Since Dirac stated his Large Number Hypothesis the space-time variation of fundamental constants has been an active subject of research. Here we analyze the possible spatial variation of two fundamental constants: the fine structure constant α and the speed of light c. We study the effects of such variations on the luminosity distance and on the peak luminosity of Type Ia supernovae (SNe Ia). For this, we consider the change of each fundamental constant separately and discuss a dipole model for its variation. Elaborating upon our previous work, we take into account the variation of the peak luminosity of Type Ia supernovae resulting from the variation of each of these fundamental constants. Furthermore, we also include the change of the energy release during the explosion, which was not studied before in the literature. We perform a statistical analysis to compare the predictions of the dipole model for α and c variation with the Union 2.1 and JLA compilations of SNe Ia. Allowing the nuisance parameters of the distance estimator μ0 and the cosmological density matter Ωm to vary. As a result of our analysis, we obtain a first estimate of the possible spatial variation of the speed of light c. On the other hand, we find that there is no significant difference between the several phenomenological models studied here and the standard cosmological model, in which fundamental constants do not vary at all. Thus, we conclude that the actual set of data of Type Ia supernovae does not allow to verify the hypothetical spatial variation of fundamental constants.
format	Articulo Preprint
author	Negrelli, Carolina Soledad Kraiselburd, Lucila Landau, Susana J. García-Berro, Enrique
author_facet	Negrelli, Carolina Soledad Kraiselburd, Lucila Landau, Susana J. García-Berro, Enrique
author_sort	Negrelli, Carolina Soledad
title	Spatial variation of fundamental constants: testing models with thermonuclear supernovae
title_short	Spatial variation of fundamental constants: testing models with thermonuclear supernovae
title_full	Spatial variation of fundamental constants: testing models with thermonuclear supernovae
title_fullStr	Spatial variation of fundamental constants: testing models with thermonuclear supernovae
title_full_unstemmed	Spatial variation of fundamental constants: testing models with thermonuclear supernovae
title_sort	spatial variation of fundamental constants: testing models with thermonuclear supernovae
publishDate	2018
url	http://sedici.unlp.edu.ar/handle/10915/129331
work_keys_str_mv	AT negrellicarolinasoledad spatialvariationoffundamentalconstantstestingmodelswiththermonuclearsupernovae AT kraiselburdlucila spatialvariationoffundamentalconstantstestingmodelswiththermonuclearsupernovae AT landaususanaj spatialvariationoffundamentalconstantstestingmodelswiththermonuclearsupernovae AT garciaberroenrique spatialvariationoffundamentalconstantstestingmodelswiththermonuclearsupernovae
bdutipo_str	Repositorios
_version_	1764820452367138817

Spatial variation of fundamental constants: testing models with thermonuclear supernovae

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