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Exploring stable models in \(f(R,T, R_{\mu\nu}T^{\mu\nu})\) gravity

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Abstract

We examine in this paper the stability analysis in \(f(R,T, R_{\mu\nu }T^{\mu\nu})\) modified gravity, where \(R\) and \(T\) are the Ricci scalar and the trace of the energy-momentum tensor, respectively. By considering the flat Friedmann universe, we obtain the corresponding generalized Friedmann equations and we evaluate the geometrical and matter perturbation functions. The stability is developed using the de Sitter and power-law solutions. We search for application the stability of two particular cases of \(f(R,T, R_{\mu\nu}T^{\mu\nu})\) model by solving numerically the perturbation functions obtained.

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Acknowledgements

The authors thank Prof. S.D. Odintsov for useful comments and suggestions. E.H. Baffou thanks IMSP for every kind of support during the realization of this work. M.J.S. Houndjo thanks Université de Natitingou.

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Correspondence to E. H. Baffou.

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Baffou, E.H., Houndjo, M.J.S. & Tosssa, J. Exploring stable models in \(f(R,T, R_{\mu\nu}T^{\mu\nu})\) gravity. Astrophys Space Sci 361, 376 (2016). https://doi.org/10.1007/s10509-016-2958-y

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  • DOI: https://doi.org/10.1007/s10509-016-2958-y

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