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arXiv 2103.08339gr-qc
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非平坦FRW论域中状态发现诊断的Barrow HDE模型

Barrow HDE model for Statefinder diagnostic in non-flat FRW universe

Archana Dixit, Vinod Kumar Bharadwaj, Anirudh Pradhan

摘要:

在这项工作中,我们研究了一个非平坦的Friedmann-Robertson-Walker宇宙充满了无压的暗物质(DM)和巴罗全息暗能量(BHDE),其红外截止是视视界。在众多的DE模型中,(BHDE)模型显示了讨论宇宙相变的动力学热情。根据这项新的研究,宇宙在最近的过去从减速膨胀期平稳过渡到加速膨胀期。我们表明,$q$的发展依赖于空间曲率的类型。在这里,我们研究状态方程(EoS)参数的BHDE模型,以确定宇宙演化的非平坦宇宙。(EoS)参数和减速参数(DP)显示出令人满意的性能,它不穿过假想线。我们还绘制了状态发现者图,通过取不同的巴罗指数值$\triangle$来表征BHDE模型的性质。此外,我们还注意到在$(ω_{D}-ω_{D}^{'})$平面上的BHDE模型,它可以为我们提供一个有价值的,强有力的发现,以数学确定的statefinder。在statefinder轨迹中,发现该模型能够到达$ΛCDM$固定点。

英文摘要:

In this work we study a non-flat Friedmann-Robertson-Walker universe filled with a pressure-less dark matter (DM) and Barrow holographic dark energy (BHDE) whose IR cutoff is the apparent horizon. Among various DE models, (BHDE) model shows the dynamical enthusiasm to discuss the universe's transition phase. According to the new research, the universe transitioned smoothly from a decelerated to an accelerated period of expansion in the recent past. We exhibit that the development of $q$ relies upon the type of spatial curvature. Here we study the equation of state (EoS) parameter for the BHDE model to determine the cosmological evolution for the non-flat universe. The (EoS) parameter and the deceleration parameter (DP) shows a satisfactory behaviour, it does not cross the the phantom line. We also plot the statefinder diagram to characterize the properties of the BHDE model by taking distinct values of barrow exponent $\triangle$. Moreover, we likewise noticed the BHDE model in the $(ω_{D}-ω_{D}^{'})$ plane, which can furnish us with a valuable, powerful finding to the mathematical determination of the statefinder. In the statefinder trajectory, this model was found to be able to reach the $ΛCDM$ fixed point.

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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