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Solar System experiments do not yet veto modified gravity models

Valerio Faraoni
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Abstract

The dynamical equivalence between modified and scalar-tensor gravity theories is revisited and it is concluded that it breaks down in the limit to general relativity. A gauge-independent analysis of cosmological perturbations in both classes of theories lends independent support to this conclusion. As a consequence, the PPN formalism of scalar-tensor gravity and Solar System experiments do not veto modified gravity, as previously thought.

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Valerio Faraoni. 2006-07-05. Solar System experiments do not yet veto modified gravity models. https://doi.org/10.1103/physrevd.74.023529

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