论文标题
注入PBH物质和独特的引力波的起源
PBH-infused seesaw origin of matter and unique gravitational waves
论文作者
论文摘要
具有三个右撇子（RH）中微子扩展的标准模型是可以解释光中微子质量，宇宙的重子不对称和暗物质（DM）的最简单模型。在实验中，RH Neutminos呈光的模型通常更容易测试。在这项工作中，我们表明，即使RH Neutrinos超重（$ M_ {i = 1,2,3}> 10^9 $ GEV） - 靠近大统一量表，也可以通过其在随机重力波（GW）背景上的独特功能来测试该模型。我们考虑一个早期的宇宙，充满了超轻原始黑洞（PBH），该宇宙通过霍金辐射产生超重的RH Neutminino DM。在PBHS蒸发之前，另一对RH中微子通过热瘦素生成产生了Baryon不对称性。由于PBH密度波动引起的GWS，GW干涉仪可以测试这种新型质量。在更精致的版本中，其中a $ u（1）$量规对称破坏会动态生成seesaw量表，PBHS还会导致$ u（1）$ - 破坏宇宙弦的GWS上可观察到的光谱扭曲。因此，与DM Genesis相关的低频GW特征和可与脉冲星阵列可检测到的阵列必须对应于在干涉仪尺度下与男性生成有关的中间或高频GW签名。
The Standard Model, extended with three right-handed (RH) neutrinos, is the simplest model that can explain light neutrino masses, the baryon asymmetry of the Universe, and dark matter (DM). Models in which RH neutrinos are light are generally easier to test in experiments. In this work, we show that, even if the RH neutrinos are super-heavy ($M_{i=1,2,3}>10^9$ GeV) -- close to the Grand Unification scale -- the model can be tested thanks to its distinct features on the stochastic Gravitational Wave (GW) background. We consider an early Universe filled with ultralight primordial black holes (PBH) that produce a super-heavy RH neutrino DM via Hawking radiation. The other pair of RH neutrinos generates the baryon asymmetry via thermal leptogenesis, much before the PBHs evaporate. GW interferometers can test this novel spectrum of masses thanks to the GWs induced by the PBH density fluctuations. In a more refined version, wherein a $U(1)$ gauge symmetry breaking dynamically generates the seesaw scale, the PBHs also cause observable spectral distortions on the GWs from the $U(1)$-breaking cosmic strings. Thence, a low-frequency GW feature related to DM genesis and detectable with a pulsar-timing array must correspond to a mid- or high-frequency GW signature related to baryogenesis at interferometer scales.
