Constraints on Newton's constant from cosmological observations.

Newton's constant has observational effects on both the CMB power spectra and the light curves of SNIa. We use Planck data, BAO data and the SNIa measurement to constrain the varying Newton's constant G during the CMB epoch and the redshift ranges of PANTHEON samples, and find no evidence indicating that G is varying with redshift. By extending the Λ CDM model with one free parameter G, we get G = (6. 65635 - 0.18560 + 0.18766) × 10 - 11 m 3 kg - 1 s - 2 and H 0 = 67. 62 - 1.25 + 1.24 km s - 1 Mpc - 1 at 68 % CL from Planck + BAO + uncalibrated PANTHEON. The results show the value of G is consistent with CODATA 2018, but the H 0 tension can't be solved in this way. [ABSTRACT FROM AUTHOR]

Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)