论文标题
各向异性宇宙中引力波的功率谱
The Power Spectrum Of Gravitational Waves In Anisotropic Universe
论文作者
论文摘要
简单通货膨胀模型的预测之一是具有几乎规模的引力波（\ textbf {pgw}）的重力波的随机背景（或者实际上所谓的原始引力波（\ textbf {pgw}））。在这项工作中，我们考虑了这些波动是由于各向异性背景（Bianchi Type-i）度量而引起的，这些波是通过关注其功率谱。这些预期的框架是爱因斯坦和改良的重力框架。调查表明，在修饰的重力环境中，结果具有更多适应身体状况或约束的能力。尤其是，在修改的框架中，频谱的规模 - 频谱特征更为明显。
One of the predictions from simple inflation models is a stochastic background of gravitational waves (or literally what is called the Primordial Gravitational Waves (\textbf{PGW})) with a nearly scale--invariant spectrum. In this work, we consider these waves arising from perturbing the Anisotropic background (Bianchi type--I) metric by focus on their power spectrums.The intended frameworks are the Einstein's and modified gravity frames. The investigations indicate that in the modified gravity context, the results have more ability to adapt to physical conditions or constraints. Especially, the scale--invariant character of the spectrum is much more pronounced in the modified framework.
