Exploring stable models in f(R,T,RμνTμν) gravity

We examine in this paper the stability analysis in f ( R , T , R μ ν T μ ν ) 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...

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Bibliographic Details
Published in:Astrophysics and space science 2016-12, Vol.361 (12)
Main Authors: Baffou, E. H., Houndjo, M. J. S., Tosssa, J.
Format: Article
Language:English
Subjects:
Astrobiology
Astronomy
Astrophysics and Astroparticles
Cosmology
Observations and Techniques
Original Article
Physics
Physics and Astronomy
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
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Summary:We examine in this paper the stability analysis in f ( R , T , R μ ν T μ ν ) 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 μ ν T μ ν ) model by solving numerically the perturbation functions obtained.
ISSN:0004-640X
1572-946X
DOI:10.1007/s10509-016-2958-y