论文标题
重力波违反了巴里昂和轻子数字
Baryon and Lepton Number Violation from Gravitational Waves
论文作者
论文摘要
我们描述了一类模型的独特引力波签名，在对称性断裂量表之间具有巨大的层次结构。信号的异常形状是从高尺度产生的宇宙字符串和宇宙学相变低的宇宙弦的重叠贡献的结果。我们将这个想法应用于具有测量Baryon和Lepton数字的简单模型，其中Lepton数字的高尺度破裂是由中微子的Seesaw机制激励的，而观察到的暗物质密度则需要低尺度的Baryon数量破裂。可以在即将进行的重力波实验中搜索新颖的签名。
We describe a unique gravitational wave signature for a class of models with a vast hierarchy between the symmetry breaking scales. The unusual shape of the signal is a result of the overlapping contributions to the stochastic gravitational wave background from cosmic strings produced at a high scale and a cosmological phase transition at a low scale. We apply this idea to a simple model with gauged baryon and lepton number, in which the high-scale breaking of lepton number is motivated by the seesaw mechanism for the neutrinos, whereas the low scale of baryon number breaking is required by the observed dark matter relic density. The novel signature can be searched for in upcoming gravitational wave experiments.
