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 |
| _version_ | 1798002572557025280 |
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| author | Laur Järv |
| author_facet | Laur Järv |
| author_sort | Laur Järv |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-11T11:54:25Z |
| format | Article |
| id | doaj.art-9274ffe403534461ac9eddb2ccd1c3ed |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-04-11T11:54:25Z |
| publishDate | 2017-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-9274ffe403534461ac9eddb2ccd1c3ed2022-12-22T04:25:12ZengMDPI AGUniverse2218-19972017-04-01323710.3390/universe3020037universe3020037Effective Gravitational “Constant” in Scalar-(Curvature)Tensor and Scalar-Torsion GravitiesLaur Järv0Institute of Physics, University of Tartu, W. Ostwaldi 1, 50411 Tartu, EstoniaIn 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.http://www.mdpi.com/2218-1997/3/2/37scalar-tensor gravitymultiscalar-tensor gravityscalar-torsion gravityparametrized post-Newtonian formalismcosmologyeffective Newton’s constant |
| spellingShingle | Laur Järv Effective Gravitational “Constant” in Scalar-(Curvature)Tensor and Scalar-Torsion Gravities Universe scalar-tensor gravity multiscalar-tensor gravity scalar-torsion gravity parametrized post-Newtonian formalism cosmology effective Newton’s constant |
| title | Effective Gravitational “Constant” in Scalar-(Curvature)Tensor and Scalar-Torsion Gravities |
| title_full | Effective Gravitational “Constant” in Scalar-(Curvature)Tensor and Scalar-Torsion Gravities |
| title_fullStr | Effective Gravitational “Constant” in Scalar-(Curvature)Tensor and Scalar-Torsion Gravities |
| title_full_unstemmed | Effective Gravitational “Constant” in Scalar-(Curvature)Tensor and Scalar-Torsion Gravities |
| title_short | Effective Gravitational “Constant” in Scalar-(Curvature)Tensor and Scalar-Torsion Gravities |
| title_sort | effective gravitational constant in scalar curvature tensor and scalar torsion gravities |
| topic | scalar-tensor gravity multiscalar-tensor gravity scalar-torsion gravity parametrized post-Newtonian formalism cosmology effective Newton’s constant |
| url | http://www.mdpi.com/2218-1997/3/2/37 |
| work_keys_str_mv | AT laurjarv effectivegravitationalconstantinscalarcurvaturetensorandscalartorsiongravities |