Effective Gravitational “Constant” in Scalar-(Curvature)Tensor and Scalar-Torsion Gravities
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 t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-04-01
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| Series: | Universe |
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| Online Access: | http://www.mdpi.com/2218-1997/3/2/37 |
| Summary: | 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. |
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| ISSN: | 2218-1997 |