Cosmological parameters in Barrow holographic dark energy

Cosmological parameters in Barrow holographic dark energy
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巴罗全息暗能量中的宇宙学参数

DOI:
10.1142/s0219887822500827
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发表时间:
2022
影响因子:
1.8
通讯作者:
U. Sharma
U. Sharma
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
A. Remya;Pankaj;U. Sharma

文献摘要

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这项工作致力于根据时变减速参数来描述巴罗全息暗能量(BHDE)的宇宙学场景。我们研究了充满无压暗物质和 BHDE 密度的空间平坦的弗里德曼-罗伯逊-沃克 (FRW) 宇宙的演化。我们使用哈勃视界作为红外截止点,分析了基本宇宙学参数(包括减速参数、状态方程参数和密度参数)的演化历史,并在 BHDE 模型中找到了适当的特征。此外,我们通过重建标量场势来检查模型的各种结构,以描述宇宙加速膨胀阶段。为了获得更准确的暗能量模型特征,我们包含了模拟 [公式:见文本]CDM 模型的状态探测器对 (r,s)。
This work is dedicated to the cosmological scenario of the Barrow holographic dark energy (BHDE) in the light of time varying deceleration parameter. We investigate the evolution of a spatially flat Friedmann–Robertson–Walker (FRW) universe filled with pressure-less dark matter and BHDE density. We analyze the evolutionary history of essential cosmological parameters, including the deceleration parameter, the equation of state parameter, and the density parameter, using the Hubble horizon as the IR cut-off, and find appropriate characteristics in the BHDE model. Also, we examine the various structures of the model by reconstructing the scalar field potential to describe the universe accelerated expansion phase. For more accuracy of the dark energy model characteristics, we include the statefinder pair (r,s) which mimics the [Formula: see text]CDM model.