Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-11-05
Astrophys.J.637:38-52,2006
Astronomy and Astrophysics
Astrophysics
41 pages, 2 figures, new references added, bounds on the gauge coupling constants at http://www.df.uba.ar/users/slandau/tablas
Scientific paper
10.1086/431417
Using the semi-analytic method proposed by \citet{Esma91} 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. The abundances of light elements as a function of the fundamental constants are obtained. Finally, using the observational data of $\De$, $\Het$, $\He$ and $\Li$ we estimate constraints on the variation of the fundamental constants between the 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, precludes from stronger conclusions.
Landau Susana J.
Mosquera Mercedes E.
Vucetich Hector
No associations
LandOfFree
Primordial Nucleosynthesis with varying fundamental constants: A semi-analytical approach does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Primordial Nucleosynthesis with varying fundamental constants: A semi-analytical approach, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Primordial Nucleosynthesis with varying fundamental constants: A semi-analytical approach will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-497767