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Journal articles

Nonlocal metric formulations of modified Newtonian dynamics with sufficient lensing

Abstract : We demonstrate how to construct purely metric modifications of gravity which agree with general relativity in the weak field regime appropriate to the Solar System, but which possess an ultra-weak field regime when the gravitational acceleration becomes comparable to $a_0 \sim 10^{10}$. In this ultra-weak field regime, the models reproduce the MOND force without dark matter and also give enough gravitational lensing to be consistent with existing data. Our models are nonlocal and might conceivably derive from quantum corrections to the effective field equations.
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Submitted on : Sunday, April 24, 2022 - 11:18:11 AM
Last modification on : Wednesday, April 27, 2022 - 3:17:04 AM

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PhysRevD.84.124054.pdf
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Cédric Deffayet, Gilles Esposito-Farèse, Richard P. Woodard. Nonlocal metric formulations of modified Newtonian dynamics with sufficient lensing. Physical Review D, American Physical Society, 2011, 84, pp.124054. ⟨10.1103/PhysRevD.84.124054⟩. ⟨insu-03645838⟩

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