论文标题
在Brans-Dicke重力理论中以最近的H（Z）和BAO观测来限制Bianchi型V宇宙
Constraining Bianchi type V universe with recent H(z) and BAO observations in Brans-Dicke theory of gravitation
论文作者
论文摘要
在本文中，我们研究了Brans-Dicke重力理论中Bianchi型V宇宙的过渡模型。派生的模型不仅验证了马赫的原理，而且还描述了宇宙的当前加速度。在本文中，我们的目的是限制Brans -Dicke Gravity中确切的Bianchi型V宇宙。为此，首先，我们获得了修改重力中的场方程的精确解，其次通过将模型与最近的$ H（Z）$和BARYON声学振荡（BAO）观测数据界定来约束模型参数。宇宙常数筛选标量场的贡献还描述了宇宙加速扩展的当前阶段，其贡献参数显示了$ z_ {t} = 0.79 $的过渡红移。还讨论了宇宙的某些物理特性。
In this paper, we investigate a transitioning model of Bianchi type V universe in Brans-Dicke theory of gravitation. The derived model not only validates Mach's principle but also describes the present acceleration of the universe. In this paper, our aim is to constrain an exact Bianchi type V universe in Brans - Dicke gravity. For this sake, firstly we obtain an exact solution of field equations in modified gravity and secondly constrain the model parameters by bounding the model with recent $H(z)$ and Baryon acoustic oscillations (BAO) observational data. The current phase of accelerated expansion of the universe is also described by the contribution coming from cosmological constant screened scalar field with deceleration parameter showing a transition redshift of about $z_{t} = 0.79$. Some physical properties of the universe are also discussed.
