General Relativity and Gravitation

, Volume 37, Issue 11, pp 1891–1904 | Cite as

Post-newtonian parameters from alternative theories of gravity

  • Gianluca Allemandi
  • Mauro Francaviglia
  • Matteo Luca Ruggiero
  • Angelo Tartaglia
Research Article


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.


Alternative theories of gravity Post-Newtonian parameters 


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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Gianluca Allemandi
    • 1
  • Mauro Francaviglia
    • 1
  • Matteo Luca Ruggiero
    • 2
  • Angelo Tartaglia
    • 2
  1. 1.Dipartimento di MatematicaUniversità di TorinoTorinoItaly
  2. 2.Dipartimento di FisicaPolitecnico di TorinoTorinoItaly

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