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An Introduction to Primordial Nucleosynthesis

Published online by Cambridge University Press:  27 September 2007

A. Coc*
Affiliation:
Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), CNRS/IN2P3, Université Paris Sud, UMR 8609, Bâtiment 104, 91405 Orsay Campus, France
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Abstract

Primordial nucleosynthesis is one of the three observational evidences for the Big–Bang model. Even though they span a range of nine orders of magnitude, there is indeed a good overall agreement between primordial abundances of 4He, D, 3He and 7Li either deduced from observation or primordial nucleosynthesis. This comparison was used for the determination of the baryonic density of the Universe. For this purpose, it is now superseded by the analysis of the CMB anisotropies. Big–Bang nucleosynthesis remains, nevertheless, a valuable tool to probe the physics of the early Universe.

Type
Research Article
Copyright
© EAS, EDP Sciences, 2007

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