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arXiv 2102.09946gr-qc
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Barrow全息暗能量的状态发现层次模型

Statefinder hierarchy model for the Barrow holographic dark energy

Vinod Kumar Bhardwaj, Archana Dixit, Anirudh Pradhan

摘要:

本文将Barrow全息暗能量(BHDE)模型的状态发现器层次应用于FLRW宇宙系统。我们应用两个DE诊断工具来确定$ΛBHDE$模型具有$\triangle$的各种估计。第一个诊断工具是状态查找器层次,其中我们已经研究了$S^{(1)}_{3}$ $S^{(1)}_{4}$、$S^{(2)}_{3}$ $S^{(2)}_{4}$,第二个是复合零诊断(CND),其中讨论了轨迹($S^{(1)}_{3} - ε$)、($S^{(1)}_{4}-ε$)、($S^{(2)}_{3}-ε$)($S^{(2)}_{4}-ε$),其中$ε$是分数增长参数。这里的红外截止线是从哈勃视界拍摄的。最后,随着物质扰动的增长率,我们绘制的状态发现层次,确定一个复合零诊断,可以区分新兴的暗能量从$ΛCDM$。此外,已被证明是一个有用的工具,用于诊断BHDE,特别是用于打破退化与不同的参数值的模型的层次结构的状态发现者和分数增长参数的组合。

英文摘要:

In this paper, we have used the state finder hierarchy for Barrow holographic dark energy (BHDE) model in the system of the FLRW Universe. We apply two DE diagnostic tools to determine $ΛBHDE$ model to have various estimations of $\triangle$. The first diagnostic tool is the state finder hierarchy in which we have studied $S^{(1)}_{3}$ $S^{(1)}_{4}$, $S^{(2)}_{3}$ $S^{(2)}_{4}$ and second is the composite null diagnostic (CND) in which the trajectories ( $S^{(1)}_{3} - ε$), ($S^{(1)}_{4}-ε$), ($S^{(2)}_{3}-ε$)($S^{(2)}_{4}-ε$) are discussed, where $ε$ is fractional growth parameter. The infrared cut-off here is taken from the Hubble horizon. Finally, together with the growth rate of matter perturbation, we plot the state finder hierarchy that determines a composite null diagnosis that can differentiate emerging dark energy from $ΛCDM$. In addition, the combination of the hierarchy of the state finder and the fractional growth parameter has been shown to be a useful tool for diagnosing BHDE, particularly for breaking the degeneracy with different parameter values of the model.

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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