Journal
MODERN PHYSICS LETTERS A
Volume 23, Issue 2, Pages 109-114Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217732308026248
Keywords
modified gravity; non-geodesic force; dark matter; pioneer acceleration
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In the general picture of high order theories of gravity, recently, the R-1 theory has been analyzed in two different frameworks. In this letter a third context is added, considering an explicit coupling between the R-1 function of the Ricci scalar and the matter Lagrangian. The result is a non-geodesic motion of test particles which, in principle, could be connected with Dark Matter and Pioneer anomaly problems.
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