arXiv 2006.014062020-06hep-phastro-ph.CO

$SO(10)$大统一中额外$U(1)$破裂产生的引力波

Gravitational waves from breaking of an extra $U(1)$ in $SO(10)$ grand unification

Nobuchika Okada, Osamu Seto, Hikaru Uchida

备注：: 24 pages, 3 figures, discussion and references added, the final journal published version
发表信息：: Prog Theor Exp Phys (2021)
DOI：: 10.1093/ptep/ptab003

摘要：

在一类规范的$U(1)$扩展标准模型（SM）中，$U(1)$对称性的破缺不仅是产生对跷跷板机制至关重要的右手中微子Majorana质量的来源，而且也是产生随机引力波（GW）背景的来源。这种$U(1)$扩展模型从大统一的观点来看是有充分动机的。本文讨论了通过$SU(5) \times U(1)$统一的中间步骤，用$SO(10)$大统一模型成功地完成了一个$U(1)$扩展SM的紫外完备化。与一个参数集，是兼容的$SO(10)$大统一，我们发现，一阶相变与$U(1)$对称性破缺可以足够强，以产生一个可检测的幅度大小的GW。我们还发现，随着RH中微子质量的增加，产生的GW振幅减小，峰值频率变高。

英文摘要：

In a class of gauged $U(1)$ extended Standard Models (SMs), the breaking of the $U(1)$ symmetry is not only a source for Majorana masses of right-handed (RH) neutrinos crucial for the seesaw mechanism, but also a source of stochastic gravitational wave (GW) background. Such $U(1)$ extended models are well-motivated from the viewpoint of grand unification. In this paper, we discuss a successful ultraviolet completion of a $U(1)$ extended SM by an $SO(10)$ grand unified model through an intermediate step of $SU(5) \times U(1)$ unification. With a parameter set that is compatible with the $SO(10)$ grand unification, we find that a first-order phase transition associated with the $U(1)$ symmetry breaking can be strong enough to generate GWs with a detectable size of amplitude. We also find that the resultant GW amplitude reduces and its peak frequency becomes higher as the RH neutrino masses increase.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

摘要：

英文摘要：

相关论文