论文标题
在高斯重力中与可行的暗能量时代的弹跳统一
Unification of a Bounce with a Viable Dark Energy Era in Gauss-Bonnet Gravity
论文作者
论文摘要
在这项工作中，我们将证明可以在高斯河网修饰的重力下以统一的方式描述与黑暗能量时代的原始反弹。尤其是，早期反弹具有原始标量曲率扰动的几乎规模不变的功率谱，而暗能能时代是可行的，这意味着它模拟了$λ$ -Cold-Dark-Dark-Matter模型，并且与Planck 2018数据宇宙学参数的数据也兼容。此外，我们的分析表明，黑暗能源时代不受黑暗能量振荡，这是在$ f（r）$重力的背景下发生的。我们通过检查高斯河网型的$ f（r）$扩展，进一步解决了以后的问题，我们表明该动作的$ f（r）$重力部分实际上在Redshifts $ z \ sim 4 $上产生了暗能量振荡。
In this work we shall demonstrate that it is possible to describe in a unified way a primordial bounce with the dark energy era, in the context of Gauss-Bonnet modified gravity. Particularly, the early time bounce has a nearly scale invariant power spectrum of primordial scalar curvature perturbations, while the dark energy era is a viable one, meaning that it mimics the $Λ$-Cold-Dark-Matter model and also is compatible with the Planck 2018 data on cosmological parameters. In addition, our analysis indicates that the dark energy era is free from dark energy oscillations, which occur in the context of $f(R)$ gravity. We further addressed the later issue by examining $f(R)$ extensions of Gauss-Bonnet models, and we showed that the $f(R)$ gravity part of the action actually produces the dark energy oscillations at redshifts $z\sim 4$.
