论文标题
原始黑洞和慢速和慢速通胀的振荡重力波与中间非通货膨胀阶段
Primordial black holes and oscillating gravitational waves in slow-roll and slow-climb inflation with an intermediate non-inflationary phase
论文作者
论文摘要
我们提出了一种新的单场通货膨胀模型，其中通常的慢速通胀与新的慢速攀爬时期和慢速通货膨胀相结合，并通过短暂的中间非通货膨胀阶段。 We then show that primordial curvature perturbations can be enhanced at small scales, a sizable amount of primordial black holes (PBHs) can be produced which make up most of dark matter, the gravitational waves (GWs) induced by scalar metric perturbations that accompany with the formation of PBHs can be detectable by future GW experiments, and last but not least, our model is compatible with the latest cosmic微波背景观测。值得注意的是，GW频谱在紫外线区域中显示出独特的振荡特征，该特征源自较短的非通货膨胀阶段。在GW光谱中检测这种振荡可能表明在整个通货膨胀中存在这种非通向阶段，从而为我们提供了在早期宇宙的演变中揭示有趣时期的机会，并将我们的模型与他人区分开。
We propose a new single field inflation model in which the usual slow-roll inflation is joined to a new period of slow-climb and slow-roll inflation through a short intermediate non-inflationary phase. We then show that primordial curvature perturbations can be enhanced at small scales, a sizable amount of primordial black holes (PBHs) can be produced which make up most of dark matter, the gravitational waves (GWs) induced by scalar metric perturbations that accompany with the formation of PBHs can be detectable by future GW experiments, and last but not least, our model is compatible with the latest cosmic microwave background observations. Remarkably, the GW spectrum displays a unique oscillating character in the ultraviolet regions which originates from the short non-inflationary phase. A detection of such oscillations in the GW spectrum may suggest the existence of such a non-inflationary phase in the whole inflation, thus providing us a chance to reveal an interesting period in the evolution of the early Universe and distinguish our model from others.
