A small universe after all?
arXiv:astro-ph/9906401 · doi:10.1103/PhysRevD.62.087304
Abstract
The cosmic microwave background radiation allows us to measure both the geometry and topology of the universe. It has been argued that the COBE-DMR data already rule out models that are multiply connected on scales smaller than the particle horizon. Here we show the opposite is true: compact (small) hyperbolic universes are favoured over their infinite counterparts. For a density parameter of Omega_o=0.3, the compact models are a better fit to COBE-DMR (relative likelihood ~20) and the large-scale structure data (sigma_8 increases by ~25%).
4 pages, RevTeX, 7 Figures
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- Primordial Black Hole Pair Creation Probability in Modified Gravitational Theory
- Probability for Primordial Black Holes in Higher Dimensional Universe