Extra force in f(R) modified theories of gravity
Apr, 2007
Citations per year
Abstract: (arXiv)
The equation of motion for test particles in modified theories of gravity is derived. By considering an explicit coupling between an arbitrary function of the scalar curvature, , and the Lagrangian density of matter, it is shown that an extra force arises. This extra force is orthogonal to the four-velocity and the corresponding acceleration law is obtained in the weak field limit. Connections with MOND and with the Pioneer anomaly are further discussed.- 04.50.+h
- 95.35.+d
- 04.20.Jb
- 04.20.Cv
- gravitation: model
- field equations
- gravitation: acceleration
- approximation: weak field
- MOND
- Pioneer anomaly
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