Big Bang Nucleosynthesis as a Probe of New Physics

Details Big Bang Nucleosynthesis as a Probe of New Physics Big Bang Nucleosynthesis as a Probe of New Physics

2010-11-04

arxiv.org/abs/1011.1054v1

Ann.Rev.Nucl.Part.Sci.60:539-568,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

37 pages, 9 figures

Scientific paper

10.1146/annurev.nucl.012809.1045

Big bang nucleosynthesis (BBN), an epoch of primordial nuclear transformations in the expanding Universe, has left an observable imprint in the abundances of light elements. Precision observations of such abundances, combined with high-accuracy predictions, provide a nontrivial test of the hot big bang and probe non-standard cosmological and particle physics scenarios. We give an overview of BBN sensitivity to different classes of new physics: new particle or field degrees of freedom, time-varying couplings, decaying or annihilating massive particles leading to non-thermal processes, and catalysis of BBN by charged relics.

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