论文标题
通货膨胀前的弹跳对$ f（r）$重力理论中原始引力波的影响
Effects of a Pre-inflationary de Sitter Bounce on the Primordial Gravitational Waves in $f(R)$ Gravity Theories
论文作者
论文摘要
在这项工作中，我们研究了通货膨胀的de弹药对原始引力波的能量光谱的影响。具体而言，我们假设宇宙是由几个进化斑描述的，从自发性前弹跳开始，其次是准式保姆慢滚通货膨胀时代，其次是状态参数异常重新加热时代的恒定方程，然后是辐射和物质偏执和延迟的加速加速率。弹跳和通货膨胀时代可以通过真空$ f（r）$重力和异常的重新加热以及由$ f（r）$ reverity的协同作用和存在的perfeft flus的协同作用来实现。使用众所周知的重建技术，我们发现哪种$ f（r）$重力可以实现每个进化片，除了从相应的物质流体实现的物质和辐射统治时代。因此，我们计算了原始DE Sitter Bounce的阻尼因子，并且正如我们所显示的那样，仅通过一个引力波将来实验可以检测到信号，与没有弹跳的情况相反。我们详细讨论结果和未来观点的后果。
In this work we examine the effects of a pre-inflationary de Sitter bounce on the energy spectrum of the primordial gravitational waves. Specifically we assume that the Universe is described by several evolution patches, starting with a de Sitter pre-inflationary bounce which is followed by an quasi-de Sitter slow-roll inflationary era, followed by a constant equation of state parameter abnormal reheating era, which is followed by the radiation and matter domination eras and the late-time acceleration eras. The bounce and the inflationary era can be realized by vacuum $f(R)$ gravity and the abnormal reheating and the late-time acceleration eras by the synergy of $f(R)$ gravity and the prefect matter fluids present. Using well-known reconstruction techniques we find which $f(R)$ gravity can realize each evolution patch, except from the matter and radiation domination eras which are realized by the corresponding matter fluids. Accordingly, we calculate the damping factor of the primordial de Sitter bounce, and as we show, the signal can be detected by only one gravitational wave future experiment, in contrast to the case in which the bounce is absent. We discuss in detail the consequences of our results and the future perspectives.
