Big Bang Nucleosynthesis Calculation

Details Big Bang Nucleosynthesis Calculation Big Bang Nucleosynthesis Calculation

2001-12-07

arxiv.org/abs/astro-ph/0112182v2

Astronomy and Astrophysics

Astrophysics

16 pages, 6 figures, talk given at "Matter in the Universe" workshop, ISSI, Bern, March 2001. v2: some references added

Scientific paper

I review standard big bang nucleosynthesis and some versions of nonstandard BBN. The abundances of the primordial isotopes D, He-3, and Li-7 produced in standard BBN can be calculated as a function of the baryon density with an accuracy of about 10%. For He-4 the accuracy is better than 1%. The calculated abundances agree fairly well with observations, but the baryon density of the universe cannot be determined with high precision. Possibilities for nonstandard BBN include inhomogeneous and antimatter BBN and nonzero neutrino chemical potentials.

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