论文标题
Renyi全息暗能量及其在F（G）重力中的行为
Renyi Holographic dark energy and its behaviour in f(G) gravity
论文作者
论文摘要
在这项工作中，Renyi全息暗能量（RHDE）及其行为已通过各向异性和空间均匀的Bianchi type-I宇宙进行了探索。我们将红外截止物作为哈勃和大oliveros（GO）视野。为了找到模型字段方程的一致解决方案，假定减速参数是根据哈勃参数$ h $的功能定义的。参考当前的宇宙学数据，评估了与暗能量模型有关的宇宙学参数的行为，并检查了它们的物理意义。据观察，对于这两种模型，状态参数的方程式在晚期均达到$ -1 $。但是，带有哈勃地平线的RHDE模型从平方的声速中表现出稳定性，但是带有GO Horizon的RHDE模型表现出不稳定性。在这两个模型中，减速参数和状态结果诊断确认了宇宙的加速膨胀，并且也对应于后期的$λ$ CDM模型。
In this work, the Renyi holographic dark energy (RHDE)and its behaviour has been explored with the anisotropic and spatially homogeneous Bianchi type-I Universe in the framework of $f(G)$ gravity. We use IR cutoff as the Hubble and Granda-Oliveros (GO) horizons. To find a consistent solutions of the field equations of the models, it is assumed that the deceleration parameter is defined in terms of function of Hubble parameter $H$. With reference to current cosmological data, the behaviors of the cosmological parameters relating to the dark energy model are evaluated and their physical significance is examined. It is observed that for both the models, the equation of state parameter approaches to $-1$ at late times. However, the RHDE model with the Hubble horizon exhibits stability from the squared sound speed, but the RHDE model with the GO horizon exhibits instability. In both the models, deceleration parameter and statefinder diagnostic confirm the accelerated expansion of the Universe and also correspond to the $Λ$CDM model at late times.
