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arXiv 1905.02449physics.gen-ph
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暗能量的Tsallis全息模型:非平坦宇宙中的宇宙行为、状态发现者分析和$ω_D-ω_D'$对

Tsallis holographic model of dark energy: Cosmic behaviour, statefinder analysis and $ω_D-ω_D'$ pair in the non-flat universe

Vipin Chandra Dubey, Umesh Kumar Sharma, A. Beesham

摘要:

研究了在非平坦宇宙中,视视界作为红外截止的Tsallis全息暗能量(THDE)模型。计算了THDE模型的减速参数和物态方程的宇宙学演化。考虑暗能量密度参数$Ω_{D0} $,$Ω_{D0}=0.72$的当前值,根据$WMAP + eCMB + BAO + H_{0}$观测数据,在$(r, s)$参数对和$ω_{D}-ω^{'}_{D}$平面上,绘制了THDE模型在不同Tsallis参数$δ$值以及不同空间曲率贡献下的演化轨迹. statefinder和$ω_{D}-ω^{'}_{D}$平面图说明了THDE的特征,并展示了该框架与其他暗能量模型之间的分离。

英文摘要:

The paper investigates the Tsallis holographic dark energy (THDE) model in accordance with the apparent horizon as an infrared cut-off, in a non-flat universe. The cosmological evolution of the deceleration parameter and equation of state of THDE model are calculated. The evolutionary trajectories are plotted for the THDE model for distinct values of the Tsallis parameter $δ$ besides distinct spatial curvature contributions, in the statefinder $(r, s)$ parameter-pairs and $ω_{D}-ω^{'}_{D}$ plane, considering the present value of dark energy density parameter $Ω_{D0} $, $Ω_{D0}=0.72$, in the light of $WMAP + eCMB + BAO + H_{0}$ observational data. The statefinder and $ω_{D}-ω^{'}_{D}$ plane plots specify the feature of the THDE and demonstrate the separation between this framework and other models of dark energy.

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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