论文标题
各向异性宇宙中引力波的功率谱（\ emph {bianchi type - i}）
The Power Spectrum Of Gravitational Waves in Anisotropic Universe (\emph{Bianchi type--I})
论文作者
论文摘要
简单通货膨胀模型的预测之一是引力波（\ textbf {gw}）的随机背景，或者实际上所谓的原始引力波（\ textbf {pgw}）几乎是刻度的 - 不变的光谱。为了讨论对PGW的可能直接检测，所谓的光谱能密度（\ textbf {sed}）具有至关重要的作用。在这项工作中，我们考虑在辐射主导（\ textbf {rd}）时代产生的PGW，并通过扰动各向同性和各向异性（\ emph {bianchi type-i}）度量而产生，并专注于这些GW产生的sed。 This study was done because the power spectrum of GW from the RD epoch is one of the most important topics in early cosmology, as GW produced during this period can provide us with direct information about very High Energies and fundamental phases of the universe (e.g. inflation and phase transition)The results show that the power spectrums in the early universe are diffetent for isotropic and anisotropic universe, but they coincide at the present 时间。
One of the predictions from simple inflation models is stochastic background of Gravitational Waves (\textbf{GW}), or literally what is called Primordial Gravitational Waves (\textbf{PGW}) with a nearly scale--invariant spectrum. To discuss a possible direct detection of PGW, the quantity so--called Spectral Energy Density (\textbf{SED}) has crucial role. In this work, we consider PGW produced in the Radiation-Dominate(\textbf{RD}) era and generated by perturbing the isotropic and Anisotropic (\emph{Bianchi type--I}) metrics and focusing on the SED generated by these GW. This study was done because the power spectrum of GW from the RD epoch is one of the most important topics in early cosmology, as GW produced during this period can provide us with direct information about very High Energies and fundamental phases of the universe (e.g. inflation and phase transition)The results show that the power spectrums in the early universe are diffetent for isotropic and anisotropic universe, but they coincide at the present time.
