Scale of Homogeneity of the Universe from WMAP

Preprint

11 September 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/0309320

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).

Keywords

BACKGROUND ANISOTROPY
HORIZON GRAVITATIONAL
COSMOLOGICAL PARTICLE
FIELD FLUCTUATIONS
ANISOTROPY POWER
PRESENT LENGTH
SPECTRUM
WMAP

All Related Versions

Version 1, 2003-09-11, ArXiv
Published version: Physical Review D, 68 (12), 127301.

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