Post-Newtonian Parameters from Alternative Theories of Gravity
Gen.Rel.Grav.37:1891-1904,2005 Alternative theories of gravity have been recently studied in connection with their cosmological applications, both in the Palatini and in the metric formalism. The aim of this paper is to propose a theoretical framework (in the Palatini formalism) to test these theori...
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Main Authors | , , , |
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Format | Journal Article |
Language | English |
Published |
27.06.2005
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Subjects | |
Online Access | Get full text |
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Summary: | Gen.Rel.Grav.37:1891-1904,2005 Alternative theories of gravity have been recently studied in connection with
their cosmological applications, both in the Palatini and in the metric
formalism. The aim of this paper is to propose a theoretical framework (in the
Palatini formalism) to test these theories at the solar system level and
possibly at the galactic scales. We exactly solve field equations in vacuum and
find the corresponding corrections to the standard general relativistic
gravitational field. On the other hand, approximate solutions are found in
matter cases starting from a Lagrangian which depends on a phenomenological
parameter. Both in the vacuum case and in the matter case the deviations from
General Relativity are controlled by parameters that provide the Post-Newtonian
corrections which prove to be in good agreement with solar system experiments. |
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DOI: | 10.48550/arxiv.gr-qc/0506123 |