Primordial Nucleosynthesis with Varying Fundamental Constants : A Semianalytical Approach

Using the semi-analytic method proposed by Esmaizaldeh and coworkers we calculate the abundances of the light elements produced during primordial nucleosynthesis assuming that the gauge coupling constants of the fundamental interactions may vary.  We analyze the dependence of the nucleon masses, nuc...

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Detalles Bibliográficos
Autores principales: Landau, Susana Judith, Mosquera, Mercedes Elisa, Vucetich, Héctor
Formato: Articulo
Lenguaje:Inglés
Publicado: 2006
Materias:
Astronomía
Física
Ciencias Exactas
Cosmologicla parameters
Early universe
Nuclear reactions
Nucleosyntesis abundances
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/95564
https://ri.conicet.gov.ar/11336/73310
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-95564
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
Física
Ciencias Exactas
Cosmologicla parameters
Early universe
Nuclear reactions
Nucleosyntesis abundances
spellingShingle Astronomía
Física
Ciencias Exactas
Cosmologicla parameters
Early universe
Nuclear reactions
Nucleosyntesis abundances
Landau, Susana Judith
Mosquera, Mercedes Elisa
Vucetich, Héctor
Primordial Nucleosynthesis with Varying Fundamental Constants : A Semianalytical Approach
topic_facet Astronomía
Física
Ciencias Exactas
Cosmologicla parameters
Early universe
Nuclear reactions
Nucleosyntesis abundances
description Using the semi-analytic method proposed by Esmaizaldeh and coworkers we calculate the abundances of the light elements produced during primordial nucleosynthesis assuming that the gauge coupling constants of the fundamental interactions may vary.  We analyze the dependence of the nucleon masses, nuclear binding energies and cross sections involved in the calculation of the abundances with the fundamental constants assuming the chiral limit of QCD. We obtain the abundances of light elements as a function of the fundamental constants. Finally, using the observational data of d,  <sup>3</sup>He, <sup>4</sup>He and <sup>7</sup>Li we estimate constraints on the variation of the fundamental constants between the time of primordial nucleosynthesis and the present. All observational abundances and the WMAP estimate of the baryon density can be fitted to the theoretical predictions with varying coupling constants. The possible systematic errors in the observational data preclude stronger conclusions.
format Articulo
Articulo
author Landau, Susana Judith
Mosquera, Mercedes Elisa
Vucetich, Héctor
author_facet Landau, Susana Judith
Mosquera, Mercedes Elisa
Vucetich, Héctor
author_sort Landau, Susana Judith
title Primordial Nucleosynthesis with Varying Fundamental Constants : A Semianalytical Approach
title_short Primordial Nucleosynthesis with Varying Fundamental Constants : A Semianalytical Approach
title_full Primordial Nucleosynthesis with Varying Fundamental Constants : A Semianalytical Approach
title_fullStr Primordial Nucleosynthesis with Varying Fundamental Constants : A Semianalytical Approach
title_full_unstemmed Primordial Nucleosynthesis with Varying Fundamental Constants : A Semianalytical Approach
title_sort primordial nucleosynthesis with varying fundamental constants : a semianalytical approach
publishDate 2006
url http://sedici.unlp.edu.ar/handle/10915/95564
https://ri.conicet.gov.ar/11336/73310
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AT mosqueramercedeselisa primordialnucleosynthesiswithvaryingfundamentalconstantsasemianalyticalapproach
AT vucetichhector primordialnucleosynthesiswithvaryingfundamentalconstantsasemianalyticalapproach
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