论文标题
用重力波探测电动对称性破坏历史
Probing the electroweak symmetry breaking history with Gravitational waves
论文作者
论文摘要
我们通过两步相变点对电子对称性破坏过程进行三维晶格模拟，其中两个步骤之一是一阶相变。我们的结果表明：1）当electroweak对称性断裂是由超出标准模型扇区驱动的，左右$ \ sim \ Mathcal {o}（10^{2-3}）$ GEV $ gev，相变产生的引力波光谱是断裂的强力律型双峰形状； 2）当高尺度全局u（1）理论的一阶相变引起电动对称性破裂时，宇宙字符串会形成，然后通过颗粒辐射消失，而屈服的引力波光谱是平稳形状的。可以通过探测引力波谱来区分这两种情况。我们的研究表明，随机重力波提供了一种替代方法，可以探究与早期宇宙中的Electroweak对称性破坏模式相关的超出标准模型部门。
We perform a three dimensional lattice simulation of the electroweak symmetry breaking process through a two-step phase transition, where one of the two steps is a first order phase transition. Our results show that: 1) when the electroweak symmetry breaking is driven by the beyond Standard Model sector around $\sim \mathcal{O}(10^{2-3})$ GeV, the gravitational wave spectra produced from the phase transitions are of broken power-law double-peak shapes; 2) when the electroweak symmetry breaking is induced by a first-order phase transition of a high-scale global U(1) theory, cosmic strings can form and then disappear through particle radiation, and the yielded gravitational wave spectra are of plateau shapes. The two scenarios can be distinguished through probing gravitational wave spectra. Our study suggests that the stochastic gravitational waves provide an alternative way to probe the beyond Standard Model sector relevant to the electroweak symmetry breaking pattern in the early Universe.
