A spatial correlation analysis for a toroidal universe

Details A spatial correlation analysis for a toroidal universe A spatial correlation analysis for a toroidal universe

2008-03-14

arxiv.org/abs/0803.2130v2

Class.Quant.Grav.25:225017,2008

Astronomy and Astrophysics

Astrophysics

Scientific paper

10.1088/0264-9381/25/22/225017

The spatial cross-correlation function xi_C recently introduced by Roukema et al. is applied to the equilateral toroidal topology of the universe. Several CMB maps based on the WMAP 5yr data are analysed and a small likelihood in favour of a torus cell is revealed. The results are compared to ten LCDM simulations which point to a high false positive rate of the spatial-correlation-function method such that a firm conclusion cannot be drawn.

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