论文标题
具有观察性约束的轴向对称过渡模型
An Axially Symmetric Transitioning models with Observational Constraints
论文作者
论文摘要
在这项研究中，我们证明了宇宙的轴向对称性Bianchi型Bianchi模型的扩展历史。截至目前，我们的模型提出了一个加速的宇宙，过去曾在减速阶段。检查了两个至关重要的哈勃〜$ h（z）$和减速〜$ q（z）$参数的角色。宇宙的能量参数是借助最新的观察性哈勃数据（46-DATA点）和万神殿数据（SNIA的最新汇编，并在红移范围内进行了40个bin，$ 0.014 \ leq z \ leq leq 1.62）$。我们还通过国家发现者诊断讨论了该模型的稳定性分析。分析表明，在很晚时，该模型是一种典型类型，并指向$λ$ CDM模型。我们开发的模型以适当的方式与观察结果一致。我们已经讨论了模型的一些物理方面。
In this study, we have demonstrated the expansion history of an axially symmetric Bianchi type-I model of the universe. Our model as of now presents an accelerating universe, which had been in the decelerating phase in the past. Roles of the two crucial Hubble~$H(z)$ and deceleration~$q(z)$ parameters are examined. The energy parameters of the universe are estimated with the help of the latest observational Hubble data (46-data points) and Pantheon data (the latest compilation of SNIa with 40 binned in the redshift range $0.014 \leq z \leq 1.62)$. We also discuss the stability analysis of the model by state finder diagnosis. The analysis reveals that in late time, the model is a quintessence type and points towards the $Λ$CDM model. Our developed model agrees with observational findings in a proper way. We have discussed some of the physical aspects of the model.
