Astronomy and Astrophysics – Astrophysics
Scientific paper
1996-01-23
Astronomy and Astrophysics
Astrophysics
11 pages, including 5 figures, to appear in the Proceedings of the 6th Annual Astrophysics Conference in Maryland: Cosmic Abun
Scientific paper
Big Bang Nucleosynthesis (BBN), along with the cosmic background radiation and the Hubble expansion, is one of the pillars ofthe standard, hot, big bang cosmology since the primordial synthesis of the light nuclides (D, $^3$He, $^4$He, $^7$Li) must have occurred during the early evolution of a universe described by this model. The overall consistency between the predicted and observed abundances of the light nuclides, each of which spans a range of some nine orders of magnitude, provides impressive support for the standard models of cosmology and particle physics. Here, the results of recent, statistically consistent tests of BBN are described. This new confrontation between theory and data challenges the standard model. The crises confronting BBN are identified and several possible resolutions are outlined.
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