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Universe 2017, 3(2), 37; doi:10.3390/universe3020037

Effective Gravitational “Constant” in Scalar-(Curvature)Tensor and Scalar-Torsion Gravities

Institute of Physics, University of Tartu, W. Ostwaldi 1, 50411 Tartu, Estonia
Academic Editors: Mariusz P. Dąbrowski, Manuel Krämer and Vincenzo Salzano
Received: 1 February 2017 / Revised: 9 April 2017 / Accepted: 18 April 2017 / Published: 24 April 2017
(This article belongs to the Special Issue Varying Constants and Fundamental Cosmology)
View Full-Text   |   Download PDF [267 KB, uploaded 24 April 2017]

Abstract

In theories where a scalar field couples nonminimally to gravity, the effective gravitational “constant” becomes dependent on the value of the scalar field. This note first gives a brief review on how the cosmological evolution provides a dynamical stabilization for the gravitational “constant” as the system relaxes towards general relativity in matter dominated and potential dominated regimes for scalar-(curvature)tensor and scalar-torsion gravities. Second part summarizes the radius dependence of the gravitational “constant” around a point mass in the parametrized post-Newtonian formalism for scalar-tensor and multiscalar-tensor gravity. View Full-Text
Keywords: scalar-tensor gravity; multiscalar-tensor gravity; scalar-torsion gravity; parametrized post-Newtonian formalism; cosmology; effective Newton’s constant scalar-tensor gravity; multiscalar-tensor gravity; scalar-torsion gravity; parametrized post-Newtonian formalism; cosmology; effective Newton’s constant
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Järv, L. Effective Gravitational “Constant” in Scalar-(Curvature)Tensor and Scalar-Torsion Gravities. Universe 2017, 3, 37.

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