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Intrinsic Solar System decoupling of a scalar-tensor theory with a universal coupling between the scalar field and the matter Lagrangian

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arxiv 1308.2770 v1 pith:JY4263R6 submitted 2013-08-13 gr-qc hep-thmath-phmath.MP

Intrinsic Solar System decoupling of a scalar-tensor theory with a universal coupling between the scalar field and the matter Lagrangian

Olivier Minazzoli , Aur\'elien Hees This is my paper
classification gr-qc hep-thmath-phmath.MP
keywords classcouplingfieldgeneralmatterrelativityscalartheories
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In this communication, we present a class of Brans-Dicke-like theories with a universal coupling between the scalar field and the matter Lagrangian. We show this class of theories naturally exhibits a decoupling mechanism between the scalar field and matter. As a consequence, this coupling leads to almost the same phenomenology as general relativity in the Solar System: the trajectories of massive bodies and the light propagation differ from general relativity only at the second post-Newtonian order. Deviations from general relativity are beyond present detection capabilities. However, this class of theories predicts a deviation of the gravitational redshift at a level detectable by the future ACES and STE/QUEST missions.

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Cited by 2 Pith papers

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