Big Bang Nucleosynthesis

Details Big Bang Nucleosynthesis Big Bang Nucleosynthesis

1996-02-06

arxiv.org/abs/astro-ph/9602029v1

Nucl.Phys.Proc.Suppl. 48 (1996) 499-507

Astronomy and Astrophysics

Astrophysics

13 pages, including 4 figures, to appear in the Proceedings of the Workshop on ``Theoretical and Phenomenological Aspects of U

Scientific paper

10.1016/0920-5632(96)00303-9

In the first thousand seconds of its evolution the Universe was a primordial nuclear reactor synthesizing the nuclides D, $^3$He, $^4$He and $^7$Li. These messengers from the Big Bang provide a unique window on the early, hot, dense Universe, offering the opportunity for tests of the standard models of particle physics and of cosmology. A new, statistically coherent comparison of the primordial abundances of these nuclides inferred from increasingly accurate observational data with those predicted by the standard model hints at a possible crisis. The case for this emerging crisis is presented and several paths towards ameliorating it are explored.

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