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arXiv · astro-ph/0207505

The shape of a small universe: signatures in the cosmic microwave background

R. Bowen·P. G. Ferreira
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Abstract

We consider the most general parametrization of flat topologically compact universes, complementing the work of Scannapieco, Levin and Silk to include non-trivial shapes. We find that modifications in shape of the fundamental domain will lead to distinct signatures in the anisotropy of the cosmic microwave radiation. We make a preliminary assessment of the effect on three statistics: the angular power spectrum, the distribution of identified ``circles'' on the surface of last scattering and the correlation function of antipodal points.

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R. Bowen, P. G. Ferreira. 2002-07-23. The shape of a small universe: signatures in the cosmic microwave background. https://doi.org/10.1103/physrevd.66.041302

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