论文标题
探索由原始标量扰动引起的引力波的光谱形状，并与原始黑洞场景联系
Exploring the Spectral Shape of Gravitational Waves Induced by Primordial Scalar Perturbations and Connection with the Primordial Black Hole Scenarios
论文作者
论文摘要
人们越来越期望重力波检测器将在接下来的几年开始探测随机重力波的背景。我们探索了标量扰动引起的第二阶引力波的光谱形状，并可能在早期的宇宙中产生。我们计算在辐射和金融时代期间产生的重力波光谱以及相关的原始黑洞对应物。我们采用电源光谱，用于由$α$吸引者和非微生导数耦合通胀模型以及高斯和三角洲型形状产生的原始曲率扰动。我们证明了张量模式约束原始曲率扰动的光谱并区分通货膨胀模型之间的能力。在Kination和Radiation时代，重力波的产生也可以通过其光谱形状和振幅来区分。
There is a growing expectation that the gravitational wave detectors will start probing the stochastic gravitational wave backgrounds in the following years. We explore the spectral shapes of gravitational waves induced to second order by scalar perturbations and presumably have been produced in the early universe. We calculate the gravitational wave spectra generated during radiation and kination eras together with the associated primordial black hole counterpart. We employ power spectra for the primordial curvature perturbation generated by $α$-attractors and nonminimal derivative coupling inflation models as well as Gaussian and delta-type shapes. We demonstrate the ability of the tensor modes to constrain the spectrum of the primordial curvature perturbations and discriminate among inflationary models. Gravitational wave production during kination and radiation era can also be distinguished by their spectral shapes and amplitudes.
