Matter/Microwave Correlations in an Open Universe
Astrophysics
2009-10-28 v2 High Energy Physics - Phenomenology
Abstract
In an intriguing recent paper, Crittenden and Turok proposed cross-correlating the cosmic microwave background (CMB) with tracers of the matter density to probe the existence of a cosmological constant. Here I emphasize that a similar cross-correlation arises in an open Universe and, depending on the redshift distribution of the tracer population and the matter density, may be comparable to or stronger than that in a flat cosmological-constant Universe with the same matter density. The two cases can be distinguished through cross-correlation with tracer populations with different redshift distributions.
Cite
@article{arxiv.astro-ph/9602150,
title = {Matter/Microwave Correlations in an Open Universe},
author = {Marc Kamionkowski},
journal= {arXiv preprint arXiv:astro-ph/9602150},
year = {2009}
}
Comments
Re-titled and revised slightly for the Brief Reports section of Phys. Rev. D