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- W2034842976 abstract "A novel theory of $F(R)$ gravity with the Lagrangian density $mathcal{L}=[Rensuremath{-}(b/ensuremath{beta})mathrm{arctan}(ensuremath{beta}R)]/(2{ensuremath{kappa}}^{2})$ is analyzed. Constant curvature solutions of the model are found, and the potential of the scalar field and the mass of a scalar degree of freedom in Einstein's frame are derived. The cosmological parameters of the model are calculated, which are in agreement with the PLANCK data. Critical points for the de Sitter phase and the matter dominated epoch of autonomous equations are obtained and studied." @default.
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- W2034842976 date "2014-03-04" @default.
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- W2034842976 title "Modified arctan-gravity model mimicking a cosmological constant" @default.
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- W2034842976 doi "https://doi.org/10.1103/physrevd.89.064004" @default.
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