Possible evidence for "dark radiation" from Big Bang Nucleosynthesis Data

Details Possible evidence for "dark radiation" from Big Bang Nucleosynthesis Data Possible evidence for "dark radiation" from Big Bang Nucleosynthesis Data

2005-12-04

arxiv.org/abs/hep-th/0512038v2

Europhys.Lett.74:813-816,2006

Physics

High Energy Physics

High Energy Physics - Theory

We found that references to some nhumbers from unpublished ref.3 in v1 lead to confusion of some readers: we decided to remove

Scientific paper

10.1209/epl/i2006-10031-y

We address the emerging discrepancy between the Big Bang Nucleosynthesis data and standard cosmology, which asks for a bit longer evolution time. If this effect is real, one possible implication (in a framework of brane cosmology model) is that there is a ``dark radiation'' component which is negative and makes few percents of ordinary matter density. If so, all scales of this model can be fixed, provided brane-to-bulk leakage problem is solved.

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