论文标题
重力波从额外的$ u（1）$ in $（10）$ grand unification中的重力波
Gravitational waves from breaking of an extra $U(1)$ in $SO(10)$ grand unification
论文作者
论文摘要
在一类测量的$ u（1）$扩展标准型号（SMS）中，$ u（1）$对称的破坏不仅是对瑟索机制至关重要的主要右撇子（RH）中微子的来源，而且还是随机引力的背景（GW）的来源。从大统一的角度来看，这种$ u（1）$扩展模型能够充分激励。在本文中，我们通过$ SO（10）$ Grand Unified Model的$ U（1）$扩展SM的紫外线完成，通过$ SU（5）\ Times U（1）$ Unification的中级步骤。通过与$ SO（10）$ Grand Unification兼容的参数集，我们发现与$ u（1）$对称破坏相关的一阶相变可能足以生成具有可检测到幅度大小的GWS。我们还发现，随着RH中微子质量的增加，所得的GW振幅降低，其峰频率变得更高。
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.
