论文标题
Bianchi I时空过渡宇宙与混合标量场
Transitioning Universe with hybrid scalar field in Bianchi I space-time
论文作者
论文摘要
在本文中，我们研究了Brans-Dicke理论中的Bianchi I型过渡宇宙。为了获得字段方程的明确解决方案，我们假设标量场为$ ϕ = ϕ_ {0} \ left [t^αexp（βT）（βT）\ right]^δ$，带有$ ϕ_ {0} $，$α$，$β$，$β$和$δ$作为常数。 $α$和$β$的值是通过用最近的观察性哈勃数据（OHD）点探测所提出的模型获得的。研究了在Brans-Dicke Gravity框架内的暗物质与暗能量之间的相互作用和非相互作用的场景。派生模型中宇宙的$ OM（z）$分析表明，宇宙中充满了动态暗能量，其状态参数方程$ω_{de}> -1 $。因此，宇宙目前的行为就像典型模型。还讨论了宇宙的某些物理特性。
In this paper we investigate a Bianchi type I transitioning Universe in Brans-Dicke theory. To get an explicit solution of the field equations, we assume scalar field as $ϕ= ϕ_{0}\left[t^αexp(βt)\right]^δ$ with $ϕ_{0}$, $α$, $β$ and $δ$ as constants. The values of $α$ and $β$ are obtained by probing the proposed model with recent observational Hubble data (OHD) points. The interacting and non-interacting scenarios between dark matter and dark energy of the derived Universe within the framework of Brans-Dicke gravity are investigated. The $om(z)$ analysis of the Universe in derived model shows that the Universe is filled with dynamical dark energy with its equation of state parameter $ω_{de} > -1$. Hence the Universe behaves like a quintessence model at present epoch. Some physical properties of the Universe are also discussed.
