Big Bang Nucleosynthesis in the Post-WMAP Era

Details Big Bang Nucleosynthesis in the Post-WMAP Era Big Bang Nucleosynthesis in the Post-WMAP Era

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aipc..743..190o&link_type=abstract

THE NEW COSMOLOGY: Conference on Strings and Cosmology; The Mitchell Symposium on Observational Cosmology. AIP Conference Proce

Physics

Origin, Formation, And Abundances Of The Elements, Big Bang Nucleosynthesis

Scientific paper

An overview of the standard model of big bang nucleosynthesis (BBN) in the post-WMAP era is presented. With the value of the baryon-to-photon ratio determined to relatively high precision by WMAP, standard BBN no longer has any free parameters. In this context, the theoretical prediction for the abundances of D, 3He, 4He, and 7Li is discussed. The observational determination of the light nuclides is also discussed. While, the D and 4He observations are concordant with BBN predictions, 7Li remains discrepant with the CMB-preferred baryon density and possible explanations are reviewed. Finally, moving beyond the standard model, primordial nucleosynthesis constraints on early universe and particle physics are also briefly discussed.

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