Electron screening and its effects on Big-Bang nucleosynthesis

Details Electron screening and its effects on Big-Bang nucleosynthesis Electron screening and its effects on Big-Bang nucleosynthesis

2010-10-07

arxiv.org/abs/1010.1565v3

Phys.Rev.C83:018801,2011

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages, 4 figures, more references included. To appear in Phys. Rev. C

Scientific paper

10.1103/PhysRevC.83.018801

We study the effects of electron screening on nuclear reaction rates occurring during the Big Bang nucleosynthesis epoch. The sensitivity of the predicted elemental abundances on electron screening is studied in details. It is shown that electron screening does not produce noticeable results in the abundances unless the traditional Debye-H\"uckel model for the treatment of electron screening in stellar environments is enhanced by several orders of magnitude. The present work rules out electron screening as a relevant ingredient to Big Bang nucleosynthesis and ruling out exotic possibilities for the treatment of screening, beyond the mean-field theoretical approach.

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