论文标题
纯二次重力中的一维原始重力波
One-Dimensional Primordial Gravitational Waves In Pure Quadratic Gravity
论文作者
论文摘要
随机背景波（在原始宇宙中）的几乎规模不变频谱是通货膨胀情景的坚定预测。在目前的工作中，为了研究原始引力波，考虑了以二阶曲率不变（称为纯二次引力）描述的爱因斯坦 - 希尔伯特框架中的一个维玩具模型。原始扰动的解决方案比Einstein-Hilbert框架变化更多，并包括简单的传入和逐渐出现的波浪。通过检查扰动溶液的频谱图，可以看出，由于没有必要的光谱功能，排除了振荡溶液，但是作为阻尼指数的溶液具有产生比例不变的频谱（由CMB数据证实）。
The almost scale-invariant spectrum for the stochastic background wave (in primordial Universe) is a firm prediction of inflationary scenarios. In the present work, to study of primordial Gravitational Waves, one dimensional toy model in generalizations of the Einstein-Hilbert frame, described by second order curvature invariant (called pure Quadratic Gravity) is considered. Solutions to the primordial perturbations are more varied than Einstein-Hilbert frame and include simple incoming and outcoming waves. By examining the spectrum diagram of the perturbation solutions, it can be seen that the oscillating solutions are ruled out due to not having the necessary spectral power, but the solutions as damping exponential have the ability to produce a scale-invariant spectrum (confirmed by CMB data).
