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arXiv 1709.02259gr-qc
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关于f(R,T,R_{μν} T^{μν})引力中爱因斯坦宇宙的稳定性

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

M. Sharif, Arfa Waseem

摘要:

本文在$f(R,T,Q)$引力的背景下研究了Einstein宇宙的存在性和稳定性,其中$Q=R_{μν}T^{μν}$ .考虑尺度因子和能量密度的线性齐次扰动,我们建立了静态和扰动场方程。我们参数化的稳定区域对应的保守以及非保守的能量动量张量使用线性状态方程参数的特定模型的这种重力。图形分析的结论是,对于一个合适的参数选择,爱因斯坦宇宙的稳定区域。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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