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arXiv:0706.1775 (astro-ph)
[Submitted on 12 Jun 2007 (v1), last revised 30 Aug 2007 (this version, v2)]

Title:Galaxy-CMB Cross-Correlation as a Probe of Alternative Models of Gravity

Authors:Fabian Schmidt, Michele Liguori, Scott Dodelson
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Abstract: Bekenstein's alternative to general relativity, TeVeS, reduces to Modified Newtonian Dynamics (MOND) in the galactic limit. On cosmological scales, the (potential well <-> overdensity) relationship is quite different than in standard general relativity. Here we investigate the possibility of cross-correlating galaxies with the cosmic microwave background (CMB) to probe this relationship. At redshifts of order 2, the sign of the CMB-galaxy correlation differs in TeVeS from that in general relativity. We show that this effect is detectable and hence can serve as a powerful discriminator of these two models of gravity.
Comments: 10 pages, 6 figures, revised version re-submitted to Phys. Rev. D
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:0706.1775 [astro-ph]
  (or arXiv:0706.1775v2 [astro-ph] for this version)
  https://doi.org/10.48550/arXiv.0706.1775
Journal reference: Phys.Rev.D76:083518,2007
Related DOI: https://doi.org/10.1103/PhysRevD.76.083518

Submission history

From: Fabian Schmidt [view email]
[v1] Tue, 12 Jun 2007 19:51:49 UTC (92 KB)
[v2] Thu, 30 Aug 2007 22:08:17 UTC (89 KB)
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