论文标题
来自几何规格标量张量重力理论的暗能量
Dark energy from a geometrical gauge scalar-tensor theory of gravity
论文作者
论文摘要
在本文中，我们获得了一些宇宙学解决方案，这些解决方案描述了当前在几何规格标量重力理论的框架中加速宇宙扩展的时期。该模型中的背景几何形状是Weyl Entegrable，当在扩展宇宙的幂律中采用了不变的度量时，我们发现了Weyl标量场的一类幂律解决方案。对于模型的某些特定参数，我们获得了与Planck 2018观察数据一致的状态参数的减速和状态参数方程。减速参数渐近至$ -1/2 $。
In this paper we obtain some cosmological solutions that describe the present period of accelerating expansion of the universe in the framework of a geometrical gauge scalar-tensor theory of gravity. The background geometry in the model is the Weyl integrable and we found a class of power law solutions for the Weyl scalar field when an invariant metric is employed in a power law expanding universe. We obtain a deceleration and an equation of state parameters in agreement with PLANCK 2018 observational data for some specific parameters of the model. The deceleration parameter tends asymptotically to $-1/2$.
