标题： 轻子零模在电弱弦上的研究基于拓扑绝缘体 显示英文标题

标题： Neutrino zeromodes on electroweak strings in light of topological insulators

摘要： 我们研究电弱$Z$-弦上的中微子零模解及其在标准模型及其扩展中对弦稳定性的影响。 我们提出使用从格林函数的动量（和实）空间拓扑构造的拓扑不变量，这些常用于研究凝聚态物理中的边缘模式。 我们分析了标准模型，然后检查了中微子部分的一类和二类扩展以及它们的混合体。 基于此分析，我们还对文献中稳定$Z$-弦的提议进行了评论。 显示英文摘要

摘要： We examine neutrino zeromode solutions on the electroweak $Z$-string and their effect on the stability of the string in the standard model and its extensions. We propose using topological invariants constructed from the momentum (and real) space topology of Green's functions, often used for investigating edge modes in condensed matter physics. We analyze the standard model and then examine type-I and type-II extensions of the neutrino sector as well as their hybrid. Based on this analysis, we also comment on proposals in the literature to stabilize the $Z$-string.