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arXiv · astro-ph/9901318

Neutrino Degeneracy and Chemically Inhomogeneous Universe

A. D. Dolgov
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Abstract

A possibility that the universe may be strongly inhomogeneous chemically, while very smooth energetically, is considered. A possible mechanism which could lead to such a picture is a large and inhomogeneous lepton asymmetry. The model may explain possibly observed variation of primordial deuterium by an order of magnitude and predicts helium-rich and possibly helium-poor regions where the helium mass fraction differs from the observed 25% by a factor of 2 in either direction. Helium variation can be observed by a different dumping rate of CMB angular spectrum at small angles at different patches of the sky.

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BibTeXRIS

A. D. Dolgov. 1999-01-22. Neutrino Degeneracy and Chemically Inhomogeneous Universe. https://doi.org/10.1063/1.59400

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