论文标题
各向异性Bianchi I型宇宙学模型的稳定性分析
Stability analysis of anisotropic Bianchi type-I cosmological model in teleparallel gravity
论文作者
论文摘要
在这项工作中，我们研究了远程引力中Bianchi I型宇宙的宇宙学模型，以实现完美的液体。为了获得模型的宇宙学解，我们假设减速参数是哈勃参数$ h $的线性函数，即$ q = -1+βH$（其中$β$作为正常数）。因此，我们获得了宇宙的模型，从而从减速的初始阶段到当前加速阶段。我们已经讨论了一些物理和几何特性，例如哈勃参数，减速参数，能量密度，压力和状态（EOS）参数方程，并以红移图形方式研究其行为，并将其与观察数据（例如IA Supernovae型（SNIA））进行比较。我们还讨论了其他参数的行为，例如混蛋参数，状态基础参数，并通过研究稳定性分析和能量条件来测试模型的有效性。
In this work, we study a cosmological model of Bianchi type-I Universe in teleparallel gravity for a perfect fluid. To obtain the cosmological solution of the model, we assume that the deceleration parameter is a linear function of the Hubble parameter $H$ i.e. $q=-1+βH$ (where $β$ as a positive constant). Consequently, we get a model of our Universe, where it goes from the initial phase of deceleration to the current phase of acceleration. We have discussed some physical and geometric properties such as Hubble parameter, deceleration parameter, energy density, pressure, and equation of state (EoS) parameter and study their behavior graphically in terms of redshift and compare it with observational data such as Type Ia supernovae (SNIa). We also discussed the behavior of other parameters such as the Jerk parameter, Statefinder parameters and we tested the validity of the model by studying the stability analysis and energy conditions.
