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New Nucleosynthesis Constraint on the Variation ofG

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Copi, Craig J., Davis, Adam N., Krauss, Lawrence M.·2004·Physical Review Letters

Abstract

Big bang nucleosynthesis can provide, via constraints on the expansion rate at that time, limits on possible variations in Newton's constant, G. The original analyses were performed before an independent measurement of the baryon-to-photon ratio from the cosmic microwave background was available. Combining this with recent measurements of the primordial deuterium abundance in quasar absorption systems now allows one to derive a new tighter constraint on G without recourse to considerations of helium or lithium abundances. We find that, compared to today's value, G0, G(BBN)/G(0)=1.01(+0.20)(-0.16) at the 68% confidence level.

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Metadata

Authors
Copi, C. J., Davis, A. N., & Krauss, L. M.
Venue
Physical Review Letters
Published
2004-04-27
Volume
92
Issue
17
Pages
171301-171301
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W1968886123
Cited by
193
References
4
FWCI
6.10
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: New Nucleosynthesis Constraint on the Variation ofG. https://app.cochat.ai/papers/10.1103/physrevlett.92.171301
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Copi, C. J., Davis, A. N., & Krauss, L. M. (2004). New Nucleosynthesis Constraint on the Variation ofG. Physical Review Letters. https://doi.org/10.1103/physrevlett.92.171301

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