Abstract
Gravitational theories derived from an action principle where the Lagrange density is a power of the curvature scalerR n are investigated. For all values ofn the theories have the correct Newtonian limit and forn = 1 the same weak field solution, which predicts a bending of light of three-quarters of the value predicted by general relativity (n=1).
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References
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Roxburgh, I.W. Nonlinear Lagrangian theories of gravity. Gen Relat Gravit 8, 219–225 (1977). https://doi.org/10.1007/BF00763548
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DOI: https://doi.org/10.1007/BF00763548