Abstract
We investigate the modified \(F(R)\) gravity theory with the function \(F(R) = (1-\sqrt{1-2\lambda R-\sigma(\lambda R)^{2}})/\lambda\). The action is converted into Einstein–Hilbert action at small values of \(\lambda\) and \(\sigma\). The local tests give a bound on the parameters, \(\lambda(1+\sigma)\leq2\times10^{-6}~\mbox{cm}^{2}\). The Jordan and Einstein frames are considered, the potential, and the mass of the scalar field were obtained. The constant curvature solutions of the model are found. It was demonstrated that the de Sitter space is unstable but a solution with zero Ricci scalar is stable. The cosmological parameters of the model are evaluated. Critical points of autonomous equations are obtained and described.
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Kruglov, S.I. Notes on Born–Infeld-like modified gravity. Astrophys Space Sci 361, 73 (2016). https://doi.org/10.1007/s10509-016-2665-8
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DOI: https://doi.org/10.1007/s10509-016-2665-8