论文标题
具有大量粘度参数化的轴向对称过渡模型的观察性约束
Observational constraints for an axially symmetric transitioning model with bulk viscosity parameterization
论文作者
论文摘要
在本文中，我们已经分析了轴向对称的Bianchi I型模型中块状粘度的重要性，以研究宇宙的加速膨胀。我们考虑了针对物质主导的宇宙学模型的四个散装粘度参数化。详细讨论了两个重要的哈勃$ h（z）$和减速参数的功能。宇宙的能量参数是使用Redshift范围内的最新观察力哈勃数据（57个数据点）计算的，$ 0.07 \ leq Z \ leq 2.36）$。在此模型中，我们获得了使用粘性组件的所有可行解决方案，并分析了宇宙的扩展历史记录。最后，我们分析了状态基诊断，并发现了一些有趣的结果。现在，我们开发的模型的结果与观察结果正确保持一致。
In this paper, we have analyzed the significance of bulk viscosity in an axially symmetric Bianchi type-I model to study the accelerated expansion of the universe. We have considered four bulk viscosity parameterizations for the matter-dominated cosmological model. The function of the two significant Hubble $H(z)$ and deceleration parameters are discussed in detail. The energy parameters of the universe are computed using the most recent observational Hubble data (57 data points) in the redshift range $0.07 \leq z \leq 2.36)$. In this model, we obtained all feasible solutions with the viscous component and analyzed the universe's expansion history. Finally, we analyzed the statefinder diagnostic and found some interesting results. The outcomes of our developed model now properly align with observational results.
