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arXiv · 1709.02259

On the Stability of Einstein Universe in f(R,T,R_{μν}T^{μν}) Gravity

M. Sharif·Arfa Waseem
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Abstract

This paper investigates the existence and stability of Einstein universe in the context of $f(R,T,Q)$ gravity, where $Q=R_{μν}T^{μν}$. Considering linear homogeneous perturbations around scale factor and energy density, we formulate static as well as perturbed field equations. We parameterize the stability regions corresponding to conserved as well as non-conserved energy-momentum tensor using linear equation of state parameter for particular models of this gravity. The graphical analysis concludes that for a suitable choice of parameters, the stable regions of the Einstein universe are obtained.

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M. Sharif, Arfa Waseem. 2017-09-06. On the Stability of Einstein Universe in f(R,T,R_{μν}T^{μν}) Gravity. https://doi.org/10.1142/s0217732318502164

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