Ruling out a critical density baryonic universe
High Energy Physics - Phenomenology
2011-02-16 v1 Astrophysics
Abstract
It has been suggested by Bartlett and Hall that our universe may have the critical density in baryons by virtue of specific interactions with a `shadow' world. We show that this possibility is severely constrained by primordial nucleosynthesis, stellar evolution and the thermalization of the cosmic microwave background. In particular, recent observations of small angular-scale anisotropy in the cosmic microwave background conclusively rule out all such baryon-dominated cosmologies.
Keywords
Cite
@article{arxiv.hep-ph/9705331,
title = {Ruling out a critical density baryonic universe},
author = {Michael Birkel and Subir Sarkar},
journal= {arXiv preprint arXiv:hep-ph/9705331},
year = {2011}
}
Comments
17 pages incl. 8 eps figures, REVTEX