Primordial Helium Production in a Charged Universe

Details Primordial Helium Production in a Charged Universe Primordial Helium Production in a Charged Universe

2002-01-15

arxiv.org/abs/astro-ph/0201248v2

Phys.Lett. B545 (2002) 221-225

Astronomy and Astrophysics

Astrophysics

10 pages, 2 figures. Latex-file. A few comments and references added. It matches version to be published in Phys.Lett.B

Scientific paper

10.1016/S0370-2693(02)02636-9

We use the constraints arising from primordial nucleosynthesis to bound a putative electric charge density $|e|n_q$ of the universe. We find $|n_q/n_\gamma| \lesssim 10^{-43}$, four orders of magnitude more stringent than previous limits. We also work out the bounds on $n_q$ in models with a photon mass, that allows to have a charge density without large-scale electric fields.

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