论文标题
用曲率扰动来限制一阶相变
Constraining first-order phase transitions with curvature perturbations
论文作者
论文摘要
我们研究了量子隧穿过程在宇宙学一阶相变（PTS）期间的随机性引起的曲率扰动，并首次使用曲率扰动来限制PT参数。我们发现，宇宙微波背景频谱畸变和超跨性型的Minihalo丰度的观察可以对低于100GEV的PTS产生严格的约束，尤其是对于低规模的PTS和弱PTS。这项工作的结果很大程度上扩展了PT参数的当前约束。
We investigate the curvature perturbations induced by the randomness of the quantum tunneling process during cosmological first-order phase transitions (PTs) and for the first time ultilize curvature perturbations to constrain the PT parameters. We find that the observations of the cosmic microwave background spectrum distortion and the ultracompact minihalo abundance can give strict constraints on the PTs below 100GeV, especially for the low-scale PTs and the weak PTs. The current constraint on the PT parameters is largely extended by the results in this work.
