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arXiv 1404.7124gr-qc
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用新的引力图暗能量模型重建$f(G)$引力

Reconstruction of $f(G)$ Gravity with New Agegraphic Dark Energy Model

Abdul Jawad, Surajit Chattopadhyay, Antonio Pasqua

摘要:

本文研究了新年龄暗能量(NADE)模型和$f(G)$引力理论的重建方案,其中$G$表示平坦FRW时空中的Gauss-Bonnet不变量.在这种情况下,我们假设幂律形式的比例因子的解决方案,并研究对应的情况。本文构造了一个新的年龄图$f(G)$模型,并用图解法讨论了宇宙的演化.利用这个模型,我们分别借助于状态方程参数$ω_{eff}$和声速平方$v_s^2$研究了膨胀宇宙的不同时代和稳定性.这里提到,重建的模型代表了宇宙加速膨胀并具有不稳定性的精华时代。此外,我们还研究了该模型的状态发现轨迹,发现该模型不能到达宇宙的$Λ$ CDM相。

英文摘要:

In this work, we consider the reconstruction scenario of new agegraphic dark energy (NADE) model and $f(G)$ theory of gravity with $G$ representing the Gauss-Bonnet invariant in the flat FRW spacetime. In this context, we assume a solution of the scale factor in power-law form and study the correspondence scenario. A new agegraphic $f(G)$ model is constructed and discussed graphically for the evolution of the universe. Using this model, we investigate the different eras of the expanding universe and stability with the help of the equation of state (EoS) parameter $ω_{eff}$ and squared speed of sound $v_s^2$, respectively. It is mentioned here that the reconstructed model represents the quintessence era of the accelerated expansion of the universe with instability. Moreover, the statefinder trajectories are studied and we find out that the model is not capable of reaching the $Λ$CDM phase of the universe.

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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