论文标题
宇宙重合引起的引力波
Induced gravitational waves from the cosmic coincidence
论文作者
论文摘要
来自增强的原始标量扰动引起的引力波（GW）背景是原始黑洞（PBH）形成的最有希望的观察结果之一。 We investigate the induced GW spectrum $Ω_{\textrm{IGW}}$ from single-field inflation in the general ultra-slow-roll (USR) framework, restricting the peak frequency band to be inside $10^{-3}$-$1$ Hz and saturating PBH abundance to comprise all dark matter (DM) in the ultralight asteroid-mass window.通过援引由USR通货膨胀驱动的成功的男性生成，我们验证了今天观察到的Baryons和PBH DM之间的特定密度比的可行参数空间，即所谓的“宇宙巧合”。我们表明，宇宙的巧合需求在高频限制中界定光谱指数$ n _ {\ rm UV} $，$ω_ {\ textrm {\ textrm {igw}}（f \ gg 1）\ propto f^{ - 2n _ { - 2n _ {\ rm uv uv uv} $ 0 <n n n <n n <n n <暗示着由USR通货膨胀触发的PBHS触发的BARYOSEASION在$ 10^{ - 16} $ - $ 10^{ - 12} M_ \ ODOT $的质量范围内可以通过即将进行的高级Ligo和Pirgo数据和下一代实验（例如Lisa，Lisa，Lisa，Einstein telescope，Einstein telescope，Tianqin和Dianqin和Deanqin和decigo）来测试。
The induced gravitational wave (GW) background from enhanced primordial scalar perturbations is one of the most promising observational consequences of primordial black hole (PBH) formation from inflation. We investigate the induced GW spectrum $Ω_{\textrm{IGW}}$ from single-field inflation in the general ultra-slow-roll (USR) framework, restricting the peak frequency band to be inside $10^{-3}$-$1$ Hz and saturating PBH abundance to comprise all dark matter (DM) in the ultralight asteroid-mass window. By invoking successful baryogenesis driven by USR inflation, we verify the viable parameter space for the specific density ratio between baryons and PBH DM observed today, the so-called "cosmic coincidence." We show that the cosmic coincidence requirement bounds the spectral index $n_{\rm UV}$ in the high frequency limit, $Ω_{\textrm{IGW}}(f\gg 1)\propto f^{-2n_{\rm UV}}$, into $0 < n_{\rm UV} < 1$, which implies that baryogenesis triggered by USR inflation for PBHs in the mass range of $10^{-16}$-$10^{-12} M_\odot$ can be tested by upcoming Advanced LIGO and Virgo data and next generation experiments such as LISA, Einstein Telescope, TianQin and DECIGO.
