论文标题
来自远程标量力和标量辐射冷却的原始黑洞
Primordial black holes from long-range scalar forces and scalar radiative cooling
论文作者
论文摘要
我们描述了形成原始黑洞（PBHS）的新场景。在早期的宇宙中，即使在辐射主导的时代，标量场介导的远距离力也可能导致重颗粒的光晕。相同的相互作用导致从这种光环中的运动和紧密相遇从运动和紧密相遇中排出标量辐射。由于标量辐射的辐射冷却使光晕倒入黑洞。我们在一个简单的模型上说明了这种情况，其中Fermions通过Yukawa部队相互作用。 PBH的丰度和质量功能适合考虑所有暗物质，或者对于Ligo检测到的某些引力事件。该模型将暗区颗粒的质量与质量和深色PBH的质量联系起来，可以解释为什么暗物质和普通物质具有相似的质量密度。该模型还预测了对有效的轻度自由度数量的贡献很小，这可以帮助协调哈勃常数的不同测量值。
We describe a new scenario for the formation of primordial black holes (PBHs). In the early Universe, the long-range forces mediated by the scalar fields can lead to formation of halos of heavy particles even during the radiation-dominated era. The same interactions result in the emission of scalar radiation from the motion and close encounters of particles in such halos. Radiative cooling due the scalar radiation allows the halos to collapse to black holes. We illustrate this scenario on a simple model with fermions interacting via the Yukawa forces. The abundance and the mass function of PBHs are suitable to account for all dark matter, or for some gravitational wave events detected by LIGO. The model relates the mass of the dark-sector particles to the masses and abundance of dark matter PBHs in a way that can explain why the dark matter and the ordinary matter have similar mass densities. The model also predicts a small contribution to the number of effective light degrees of freedom, which can help reconcile different measurements of the Hubble constant.
