论文标题
FRW Universe中的RHDE模型，带有红移参数化的两个IR截止
RHDE models in FRW Universe with two IR cut-offs with redshift parametrization
论文作者
论文摘要
在此手稿中，我们通过最近提出的r $ \ grave {e} $ nyi全息暗能量（RHDE）的相互作用研究了FRW宇宙中的宇宙扩张现象。因此，我们假设Hubble（H）和Granda-Oliveros（Go）Horizons在$ f（r，t）$ gravity的框架中为红外线。有了这种选择，我们可以获得一些重要的宇宙学数量，例如状态$ω_ {_ t} $，能量密度$ρ_{_ t} $，密度参数$ω_{_ t} $和压力$ p _ {_ t} $，这是$ z $ z $ z $ z $。可以观察到，在这两个IR截止值中，EOS参数显示了三种不同值$δ$的五重素行为。在这里，我们绘制这些参数与红移$ z $，并讨论最近发现的一致性。接下来，我们将探索$ω_ {_ t} $ - $ω_ {_ t}^{'} $平面以及通过扰动方法对暗能量模型的稳定性分析。我们的发现表明，宇宙是一个快速增长的加速模型，由五重奏（例如行为）解释。因此，我们的模型支持了Hubble和Go cutoft的RHDE模型的可行性。结果表明，IR切断在对宇宙动力学的理解中起着重要作用。
In this manuscript, we have researched the cosmic expansion phenomenon in flat FRW Universe through the interaction of the recently proposed R$\grave{e}$nyi holographic dark energy (RHDE). For this reason, we assumed Hubble (H) and Granda--Oliveros (GO) horizons as IR cut-off in the framework of $f(R, T)$ gravity. With this choice for IR cut-off, we can obtain some important cosmological quantities such as the equation of state $ω_{_T}$, energy density $ρ_{_T}$, density parameter $Ω_{_T}$, and pressure $p_{_T}$, which are the function of the redshift $z$. It is observed that in both IR cut-offs the EoS parameter displays quintom-like behaviour for three different values of $δ$. Here we plot these parameters versus redshift $z$ and discuss the consistency of the recent findings. Next, we explore the $ω_{_T}$-$ω_{_T}^{'}$ plane and the stability analysis of the dark energy model by a perturbation method. Our findings demonstrate that the Universe is an accelerating model of rapid growth that is explained by quintom like behaviour.Hence the feasibility of the RHDE model with Hubble and GO cut-off is supported by our model. The results indicate that the IR cut-offs play a significant role in the understanding of the dynamics of the universe.
