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Scale of homogeneity of the universe from WMAP
2003
Physical Review D, Particles and fields
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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).
doi:10.1103/physrevd.68.127301
fatcat:q4arcxzonnbmralmzi46f3dg5m