标量诱导引力波探测原初黑洞暗物质的研究进展
A topic review on probing primordial black hole dark matter with scalar induced gravitational waves
摘要：
原初黑洞（PBH）被认为是在辐射主导时代由大的标量曲率扰动产生的过密区域坍缩而形成的。尽管几十年来进行了各种独立的观测，暗物质（DM）的性质仍然非常令人困惑。近年来，PBH DM对LIGO/VIRGO发现的双黑洞并合事件提供了一个吸引人的解释，并可能在DM中发挥重要作用，因而引起了人们的兴趣。在PBH的形成过程中，二阶线性标量扰动将产生引力波，称为标量诱导引力波（SIGW），这为寻找PBH DM提供了新的途径.本文主要综述了单光子潜射波伴随PBH DM形成的物理机制。
英文摘要：
Primordial black holes (PBHs) are supposed to form from the collapse of over-densed regions generated by large scalar curvature perturbations in the radiation dominated era. Despite decades of various independent observations, the nature of dark matter (DM) remains highly puzzling. Recently, PBH DM have aroused interest since they provide an attracting explanation to the merger events of binary black holes discovered by LIGO/VIRGO and may play an important role on DM. During the formation of PBH, gravitational waves will be sourced by linear scalar perturbations at second-order, known as the scalar-induced gravitational waves (SIGWs), which provides a new way to hunt for PBH DM. This topic review mainly focus on the physics about SIGWs accompanying the formation of PBH DM.
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