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Scale of Homogeneity of the Universe from WMAP

Patricia G. Castro·Marian Douspis·Pedro G. Ferreira
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Abstract

We review the physics of the Grishchuck-Zel'dovich effect which describes the impact of large amplitude, super-horizon gravitational field fluctuations on the Cosmic Microwave Background anisotropy power spectrum. Using the latest determination of the spectrum by WMAP, we infer a lower limit on the present length-scale of such fluctuations of 3927 times the cosmological particle horizon (at the 95% confidence level).

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Patricia G. Castro, Marian Douspis, Pedro G. Ferreira. 2003-09-11. Scale of Homogeneity of the Universe from WMAP. https://doi.org/10.1103/physrevd.68.127301

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