论文标题
GW170817与Einstein-Gauss-Bonnet理论的原始引力波预测
Primordial Gravitational Waves Predictions for GW170817-compatible Einstein-Gauss-Bonnet Theory
论文作者
论文摘要
在这项工作中，我们将详细计算出与GW170817兼容的Einstein-Gauss-Bonnet理论对原始引力波的能量光谱的影响。光谱受两个特征的影响，即由GW170817兼容的Einstein-Gauss-Bonnet理论以及张量光谱指数和张量量表与量表比率引起的总体扩增/阻尼因子。我们将提出形式主义，以研究GW170817兼容的Einstein-Gauss-Bonnet理论的通货膨胀动态和后通货膨胀动力学，从辐射时代开始到黑暗能源时代。我们通过使用两个特征模型来体现我们的形式主义，这些模型产生了可行的通货膨胀和深色能源时代。正如我们所证明的那样，显着的总体阻尼/扩增因子是统一的顺序，因此GW170817兼容的Einstein-Gauss-Bonnet模型仅通过其张量光谱索引和张张量比影响原始引力波能够影响原始引力波。两种模型均具有蓝色倾斜度的张量光谱，因此可以通过大多数未来的重力波实验来检测原始重力波的预测能谱，以进行各种重新加热的温度。
In this work we shall calculate in detail the effect of an GW170817-compatible Einstein-Gauss-Bonnet theory on the energy spectrum of the primordial gravitational waves. The spectrum is affected by two characteristics, the overall amplification/damping factor caused by the GW170817-compatible Einstein-Gauss-Bonnet theory and by the tensor spectral index and the tensor-to-scalar ratio. We shall present the formalism for studying the inflationary dynamics and post-inflationary dynamics of GW170817-compatible Einstein-Gauss-Bonnet theories for all redshifts starting from the radiation era up to the dark energy era. We exemplify our formalism by using two characteristic models, which produce viable inflationary and dark energy eras. As we demonstrate, remarkably the overall damping/amplification factor is of the order of unity, thus the GW170817-compatible Einstein-Gauss-Bonnet models affect the primordial gravitational waves energy spectrum only via their tensor spectral index and the tensor-to-scalar ratio. Both models have a blue tilted tensor spectrum, and therefore the predicted energy spectrum of the primordial gravity waves can be detectable by most of the future gravitational waves experiments, for various reheating temperatures.
