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The effects of coupling variations on BBN

Published online by Cambridge University Press:  21 October 2010

Keith A. Olive
Keith A. Olive*
Affiliation:
William I. FIne Theoretical Physics Institute, University of Minnesota, Minneapolis MN, 55455 USA
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Abstract

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The effect of variations of the fundamental nuclear parameters on big-bang nucleosynthesis are modeled and discussed in detail taking into account the interrelations between the fundamental parameters arising in unified theories. Considering only 4He, strong constraints on the variation of the neutron lifetime, neutron-proton mass difference are set. We show that a variation of the deuterium binding energy is able to reconcile the 7Li abundance deduced from the WMAP analysis with its spectroscopically determined value while maintaining concordance with D and 4He.

Keywords

cosmology: theorynuclear reactionsnucleosynthesisabundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Highlights H15: Highlights of Astronomy , November 2009 , pp. 305
Copyright
Copyright © International Astronomical Union 2010

References

Coc, A., Nunes, N. J., Olive, K. A., Uzan, J.-P., & Vangioni, E. 2007, Phys. Rev. D, 76, 023511CrossRefGoogle Scholar
Cyburt, R. H., Fields, B. D., & Olive, K. A. 2008, Journal of Cosmology and Astro-Particle Physics, 11, 12CrossRefGoogle Scholar