BBN And The CBR Probe The Early Universe

Details BBN And The CBR Probe The Early Universe BBN And The CBR Probe The Early Universe

2006-11-15

arxiv.org/abs/hep-ph/0611209v1

AIPConf.Proc.903:40-47,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 4 figures; to appear in Proceedings of SUSY06, the 14th International Conference on Supersymmetry and the Unification

Scientific paper

10.1063/1.2735129

Big Bang Nucleosynthesis (BBN) and the Cosmic Background Radiation (CBR) provide complementary probes of the early evolution of the Universe and of its particle content. Neutrinos play important roles in both cases, influencing the primordial abundances of the nuclides produced by BBN during the first 20 minutes, as well as the spectrum of temperature fluctuations imprinted on the CBR when the Universe is some 400 thousand years old. The physical effects relevant at these widely separated epochs are reviewed and the theoretical predictions are compared with observational data to explore the consistency of the standard models of cosmology and particle physics and to constrain beyond-the-standard-model physics and cosmology.

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