https://doi.org/10.1140/epjc/s10052-020-8137-x
Regular Article - Theoretical Physics
Constraints on Newton’s constant from cosmological observations
1
Institute of Theoretical Physics and Research Center of Gravitation, Lanzhou University, Lanzhou, 730000, China
2
School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China
* e-mail: chenlu@mail.itp.ac.cn
Received:
29
April
2020
Accepted:
10
June
2020
Published online:
25
June
2020
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 
CDM model with one free parameter G, we get 
and 
km s
Mpc at 68
CL from Planck
BAOuncalibrated PANTHEON. The results show the value of G is consistent with CODATA 2018, but the 
tension can’t be solved in this way.
© The Author(s), 2020
