Cosmological Deuterium Production in Non-Standard Scenarios

Details Cosmological Deuterium Production in Non-Standard Scenarios Cosmological Deuterium Production in Non-Standard Scenarios

2002-02-18

arxiv.org/abs/astro-ph/0202336v2

Astronomy and Astrophysics

Astrophysics

11 pages, article based on a talk presented at "Deuterium in the Universe", Meudon, June 2001, to be published in Planetary an

Scientific paper

10.1016/S0032-0633(02)00089-2

It is widely believed that the cosmic baryon density may be obtained by inferring deuterium abundances in low-metallicity quasar absorption line systems. The implicit assumptions which enter this argument are critically assessed. In particular, the production of deuterium in non-standard Big Bang nucleosynthesis scenarios, the putative production of deuterium in astrophysical environments, and the possible destruction of deuterium via non-standard chemical evolution are discussed.

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