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Phys. Rev. D 72, 044010 (2005) [5 pages]

Cosmological constraints on Newton’s constant

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Ken-ichi Umezu1,2, Kiyotomo Ichiki2,3, and Masanobu Yahiro4
1Department of Astronomical Science, the Graduate University for Advanced Studies, 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan
2National Astronomical Observatory, 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan
3Department of Astronomy, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
4Department of Physics, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8518, Japan

Received 27 March 2005; published 11 August 2005

We present cosmological constraints on deviations of Newton’s constant at large scales without specifying a model, analyzing latest cosmic microwave background (CMB) anisotropies and primordial abundances of light elements synthesized by big bang nucleosynthesis (BBN). BBN limits the possible deviation at typical scales of BBN epoch, say at 108–1012   m, to lie between -5% and +1% of the experimental value, and CMB restricts the deviation at larger scales 102–109   pc to be between -26% and +66% at the 2σ confidence level. The cosmological constraints are compared with the astronomical one from the evolution of isochrone of globular clusters.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.72.044010
DOI:
10.1103/PhysRevD.72.044010
PACS:
98.80.Cq, 98.65.Dx, 98.70.Vc
 
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