New Nucleosynthesis Constraint on the Variation ofG

2003/11/14 by Craig J. Copi, Adam N. Davis, Lawrence M. Krauss · 192 citations
Physics and Astronomy · #Abundance (ecology) #Astrophysics #Baryon #Big Bang nucleosynthesis #Black Holes and Theoretical Physics #Cosmic microwave background #Cosmology and Gravitation Theories #Lithium (medication) #Nucleosynthesis #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Stars #astro-ph #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevlett.92.171301

published in Physical Review Letters 92(17), 171301 (American Physical Society) · 3 pages revtex including 1 figure

arxiv created 2003/11/14 · openalex publication_date 2004/04/27 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

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.

Citations

• The fundamental constants and their variation: observational and theoretical status
• The origin of deuterium
• Big Bang Nucleosynthesis Predictions for Precision Cosmology
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
• A compilation of charged-particle induced thermonuclear reaction rates

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