Post-Newtonian expansion for Gauss-Bonnet Gravity
Thomas P. Sotiriou, Enrico Barausse
TL;DR
This paper develops a Parametrized Post-Newtonian framework for scalar-Gauss-Bonnet gravity theories and compares their predictions with Solar system experimental data.
Contribution
It introduces a PPN expansion for scalar-Gauss-Bonnet gravity and assesses its compatibility with Solar system tests.
Findings
Constraints on scalar-Gauss-Bonnet coupling from Solar system data
Limits on deviations from General Relativity in these theories
Potential observational signatures in gravitational experiments
Abstract
The Parametrized Post-Newtonian expansion of gravitational theories with a scalar field coupled to the Gauss-Bonnet invariant is performed and confrontation of such theories with Solar system experiments is discussed.
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