Cosmological constraints on scalar-tensor gravity and the variation of the gravitational constant

Abstract

We present cosmological constraints on the scalar-tensor theory of gravity by analyzing the angular power spectrum data of the cosmic microwave background obtained from the Planck 2015 results together with the baryon acoustic oscillations (BAO) data. We find that the inclusion of the BAO data improves the constraints on the time variation of the effective gravitational constant by more than $10\%$, that is, the time variation of the effective gravitational constant between the recombination and the present epochs is constrained as $G_{\mathrm{rec}}/G_0-1<1.9\times 10^{-3}(95.45\%C.L.)$ and $G_{\mathrm{rec}}/G_0-1<5.5\times 10^{-3}(99.99\%C.L.)$. We also discuss the dependence of the constraints on the choice of the prior.

16 pages, 13 figures, version to appear in PTEP

References in corpus (3)

• The Confrontation between General Relativity and Experiment
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
• Planck constraints on scalar-tensor cosmology and the variation of the gravitational constant

Cited by in corpus (21)

• Probing Physics Beyond the Standard Model: Limits from BBN and the CMB Independently and Combined
• Improved BBN Constraints on the Variation of the Gravitational Constant
• JWST early Universe observations and ΛCDM cosmology
• Testing Gravity on Cosmic Scales: A Case Study of Jordan-Brans-Dicke Theory
• The minimally extended Varying Speed of Light (meVSL)
• Cosmological constraints on the gravitational constant
• Galaxy clusters and a possible variation of the fine structure constant
• Dynamical analysis of the covarying coupling constants in scalar-tensor gravity
• Constraining the cosmological evolution of scalar-tensor theories with local measurements of the time variation of G
• Euclid: Constraining linearly scale-independent modifications of gravity with the spectroscopic and photometric primary probes
• Varying Coupling Constants and Their Interdependence
• A 5% measurement of the gravitational constant in the Large Magellanic Cloud
• Constraining a possible time-variation of the speed of light along with the fine-structure constant using strong gravitational lensing and Type Ia supernovae observations
• Constraining Coupling Constants' Variation with Supernovae, Quasars, and GRBs
• Shadows in conformally related gravity theories
• Cosmological test of an extended quintessence model
• Challenges to a sharp change in $G$ as a solution to the Hubble tension
• Evolution of Size, Mass, and Density of Galaxies Since Cosmic Dawn
• Constraining Co-Varying Coupling Constants from Globular Cluster Age
• A New Approach to Flatness, Horizon and Late-time Accelerating Expansion Problems on the basis of Mach Principle
• A simple prediction of the nonlinear matter power spectrum in Brans-Dicke gravity from linear theory