Predicting and analyzing topological correlations in the CMB

Details Predicting and analyzing topological correlations in the CMB Predicting and analyzing topological correlations in the CMB

2006-02-09

arxiv.org/abs/astro-ph/0602214v1

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures. To appear in the proceedings of the 7th astronomy conference of the Hellenic Astronomical Society (8-11 Se

Scientific paper

10.1063/1.2348059

The Cosmic Microwave Background (CMB) power spectrum derived from the first year WMAP data demonstrates an intriguing lack of power at large scales that cannot be accounted for within the framework of the standard cosmological model. We explore the possibility that this anomaly could be explained by waiving the implicit assumption of a simply connected topology, rather than modifying the physics of the standard model. In particular, we assume that the Universe is slightly closed and its spatial section can be described by one of the simplest spherical multi-connected manifolds (the quaternionic, the octahedral, the truncated cube and the Poincare space). We discuss the implications for the CMB in each case.

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