PPN-limit of Fourth Order Gravity inspired by Scalar-Tensor Gravity

Details PPN-limit of Fourth Order Gravity inspired by Scalar-Tensor Gravity PPN-limit of Fourth Order Gravity inspired by Scalar-Tensor Gravity

2005-07-22

arxiv.org/abs/astro-ph/0507545v2

Phys.Rev.D72:044022,2005

Astronomy and Astrophysics

Astrophysics

6 pages, Phys. Rev. D accepted version

Scientific paper

10.1103/PhysRevD.72.044022

Based on the {\it dynamical} equivalence between higher order gravity and scalar-tensor gravity the PPN-limit of fourth order gravity is discussed. We exploit this analogy developing a fourth order gravity version of the Eddington PPN-parameters. As a result, Solar System experiments can be reconciled with higher order gravity, if physical constraints descending from experiments are fulfilled.

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