Abstract
A Lagrangian derivation of the Equations of Motion (EOM) for static spherically symmetric metrics in F(R) modified gravity is presented. For a large class of metrics, our approach permits one to reduce the EOM to a single equation and we show how it is possible to construct exact solutions in F(R)-gravity. All known exact solutions are recovered. We also exhibit a new non-trivial solution with non-constant Ricci scalar.
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Sebastiani, L., Zerbini, S. Static spherically symmetric solutions in F(R) gravity. Eur. Phys. J. C 71, 1591 (2011). https://doi.org/10.1140/epjc/s10052-011-1591-8
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DOI: https://doi.org/10.1140/epjc/s10052-011-1591-8