论文标题
音速引起的原始黑洞的产生
Sound speed induced production of primordial black holes
论文作者
论文摘要
我们研究了不同的机制，通过这些机制，原始曲率扰动的速度可以产生曲率光谱的增强，这可能导致原始黑洞（PBH）的产生。一种可能性是单标量场模型中声速的增长，这可能会诱导曲率扰动的超低生长。另一个是曲率扰动的动量依赖性有效声音（混乱），这可能在多场模型或修饰的重力理论中产生。 未来的引力波（例如丽莎）将允许设置声速的空间和时间依赖性的约束，并在其可以起源的不同理论场景上设置限制。
We study different mechanisms by which the speed of primordial curvature perturbations can produce an enhancement of the curvature spectrum, which could lead to the production of primordial black holes (PBH). One possibility is the growth of the sound speed in single scalar field models, which can induce super-horizon growth of curvature perturbations. The other is the momentum dependent effective sound (MESS) of curvature perturbations, which can arise in multi-fields models or modified gravity theories. Future gravitational waves observatories such as LISA will allow to set constraints of the space and time dependency of the sound speed, and on the different theoretical scenarios from which it can originate.
