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- W1557901495 abstract "Recently we discussed a multimetric gravity theory containing several copies of standard model matter each of which couples to its own metric tensor. This construction contained dark matter sectors interacting repulsively with the visible matter sector, and was shown to lead to cosmological late-time acceleration. In order to test the theory with high-precision experiments within the solar system we here construct a simple extension of the parametrized post-Newtonian (PPN) formalism for multimetric gravitational backgrounds. We show that a simplified version of this extended formalism allows the computation of a subset of the PPN parameters from the linearized field equations. Applying the simplified formalism we find that the PPN parameters of our theory do not agree with the observed values, but we are able to improve the theory so that it becomes consistent with experiments of post-Newtonian gravity and still features its promising cosmological properties." @default.
- W1557901495 created "2016-06-24" @default.
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- W1557901495 date "2010-10-13" @default.
- W1557901495 modified "2023-10-16" @default.
- W1557901495 title "Multimetric extension of the parametrized post-Newtonian formalism: Experimental consistency of repulsive gravity" @default.
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- W1557901495 doi "https://doi.org/10.1103/physrevd.82.084028" @default.
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