Early universe constraints on time variation of fundamental constants

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We study the time variation of fundamental constants in the early Universe. Using data from primordial light nuclei abundances, cosmic microwave background, and the 2dFGRS power spectrum, we put constraints on the time variation of the fine structure constant α and the Higgs vacuum expectation value...

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Autor principal: Landau, Susana J.
Publicado: 2008
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v78_n8_p_Landau
http://hdl.handle.net/20.500.12110/paper_15507998_v78_n8_p_Landau
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_15507998_v78_n8_p_Landau
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spelling paper:paper_15507998_v78_n8_p_Landau2023-06-08T16:22:05Z Early universe constraints on time variation of fundamental constants Landau, Susana J. We study the time variation of fundamental constants in the early Universe. Using data from primordial light nuclei abundances, cosmic microwave background, and the 2dFGRS power spectrum, we put constraints on the time variation of the fine structure constant α and the Higgs vacuum expectation value v without assuming any theoretical framework. A variation in v leads to a variation in the electron mass, among other effects. Along the same line, we study the variation of α and the electron mass me. In a purely phenomenological fashion, we derive a relationship between both variations. © 2008 The American Physical Society. Fil:Landau, S.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v78_n8_p_Landau http://hdl.handle.net/20.500.12110/paper_15507998_v78_n8_p_Landau
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We study the time variation of fundamental constants in the early Universe. Using data from primordial light nuclei abundances, cosmic microwave background, and the 2dFGRS power spectrum, we put constraints on the time variation of the fine structure constant α and the Higgs vacuum expectation value v without assuming any theoretical framework. A variation in v leads to a variation in the electron mass, among other effects. Along the same line, we study the variation of α and the electron mass me. In a purely phenomenological fashion, we derive a relationship between both variations. © 2008 The American Physical Society.
author Landau, Susana J.
spellingShingle Landau, Susana J.
Early universe constraints on time variation of fundamental constants
author_facet Landau, Susana J.
author_sort Landau, Susana J.
title Early universe constraints on time variation of fundamental constants
title_short Early universe constraints on time variation of fundamental constants
title_full Early universe constraints on time variation of fundamental constants
title_fullStr Early universe constraints on time variation of fundamental constants
title_full_unstemmed Early universe constraints on time variation of fundamental constants
title_sort early universe constraints on time variation of fundamental constants
publishDate 2008
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v78_n8_p_Landau
http://hdl.handle.net/20.500.12110/paper_15507998_v78_n8_p_Landau
work_keys_str_mv AT landaususanaj earlyuniverseconstraintsontimevariationoffundamentalconstants
_version_ 1768543101854416896

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