Primordial Nucleosynthesis with Varying Fundamental Constants: A Semianalytical Approach

2004/11/30 by Susana J. Landau, M. E. Mosquera, Mercedes E. Mosquera +2
Physics and Astronomy · #Astrophysics #Big Bang nucleosynthesis #CMB cold spot #Cosmic microwave background #Cosmology and Gravitation Theories #Coupling constant #Dark Matter and Cosmic Phenomena #Nucleosynthesis #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum chromodynamics #Quantum mechanics #Stars #Stellar nucleosynthesis #astro-ph #gr-qc #hep-ph

paper · pdf · doi:10.1086/431417

published as Astrophys.J.637:38-52,2006 · 41 pages, 2 figures, new references added, bounds on the gauge coupling constants at http://www.df.uba.ar/users/slandau/tablasgauge.pdf

arxiv created 2005/05/12 · openalex publication_date 2006/01/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Using the semianalytic method proposed by Esmailzadeh 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, 3 He, 4 He, and 7 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.

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