Modified gravity with R-matter couplings and (non-)geodesic motion

Details Modified gravity with R-matter couplings and (non-)geodesic motion Modified gravity with R-matter couplings and (non-)geodesic motion

2008-05-08

arxiv.org/abs/0805.1249v2

Class.Quant.Grav.25:205002,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

typos corrected, minor changes, version published in CQG

Scientific paper

10.1088/0264-9381/25/20/205002

We consider alternative theories of gravity with a direct coupling between matter and the Ricci scalar We study the relation between these theories and ordinary scalar-tensor gravity, or scalar-tensor theories which include non-standard couplings between the scalar and matter. We then analyze the motion of matter in such theories, its implications for the Equivalence Principle, and the recent claim that they can alleviate the dark matter problem in galaxies.

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