Limits on the Detectability of Cosmic Topology in Hyperbolic Universes

Details Limits on the Detectability of Cosmic Topology in Hyperbolic Universes Limits on the Detectability of Cosmic Topology in Hyperbolic Universes

2002-10-04

arxiv.org/abs/gr-qc/0210016v1

Int.J.Mod.Phys. A17 (2002) 4261-4272

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 2 figures, LaTeX2e. To appear in Int. J. Mod. Phys. A (2002). Contribution to the Fifth Alexander Friedmann Internat

Scientific paper

10.1142/S0217751X02013307

We reexamine the possibility of the detection of the cosmic topology in nearly flat hyperbolic Friedmann-Lemaitre-Robertson-Walker (FLRW) universes by using patterns repetition. We update and extend our recent results in two important ways: by employing recent observational constraints on the cosmological density parameters as well as the recent mathematical results concerning small hyperbolic 3-manifolds. This produces new bounds with consequences for the detectability of the cosmic topology. In addition to obtaining new bounds, we also give a concrete example of the sensitive dependence of detectability of cosmic topology on the uncertainties in the observational values of the density parameters.

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