论文标题
标量导致温暖通货膨胀引起的重力波
Scalar Induced Gravitational Waves from Warm Inflation
论文作者
论文摘要
随机引力波可以是从通货膨胀期间产生的原始曲率扰动，通过标量探测模式在宇宙学扰动理论的第二阶耦合而引起的。在这里，我们讨论了一种温暖通货膨胀的模型，在该模型中，由于充气耗散，在小尺度上产生了较大的曲率扰动。这些过度密度的扰动在后来的时期崩溃，形成了原始黑洞，正如我们较早的工作中所研究的那样（参考\ cite \ cite {arya：2019wck}），因此也可以充当二阶张量扰动的来源。在这项研究中，我们从温暖的通货膨胀模型中计算了这些次级重力波的光谱。我们发现，我们的模型导致在频率范围（$ 1-10^6 $）Hz上产生的标量引起的引力波（SIGW）。此外，我们讨论了这些SIGW的检测可能性，考虑到不同正在进行的和未来的重力波实验的敏感性。
Stochastic gravitational waves can be induced from the primordial curvature perturbations generated during inflation, through scalar-tensor mode coupling at the second order of cosmological perturbation theory. Here we discuss a model of warm inflation in which large curvature perturbations are generated at the small scales because of inflaton dissipation. These overdense perturbations then collapse at later epoch to form primordial black holes, as was studied in our earlier work (Ref. \cite{Arya:2019wck}), and therefore may also act as a source to the second-order tensor perturbations. In this study, we calculate the spectrum of these secondary gravitational waves from our warm inflationary model. We find that our model leads to a generation of scalar induced gravitational waves (SIGW) over a frequency range ($1-10^6$) Hz. Further, we discuss the detection possibilities of these SIGWs, taking in account the sensitivity of different ongoing and future gravitational wave experiments.
