论文标题
折叠域墙壁超过$ z_2 $
Collapsing domain walls beyond $Z_2$
论文作者
论文摘要
离散对称性在粒子理论中广泛施加。众所周知，离散对称性的自发断裂导致域壁。当前对域墙的研究集中在$ z_2 $对称性的自发破裂中。较大的离散对称性具有多个退化真空吸尘器，导致域壁原则上不同于最简单的$ z_2 $域壁。我们将域墙从$ z_n $对称性破坏作为说明性研究中，并详细研究$ z_3 $的情况，其中得出了域壁的张力和厚度的半分析结果。明确的对称破坏术语导致域墙的动态崩溃的崩溃比$ z_2 $ case更为复杂。引力波信号偏离$ z_2 $域墙的偏离。
Discrete symmetries are widely imposed in particle theories. It is well-known that the spontaneous breaking of discrete symmetries leads to domain walls. Current studies of domain walls have focused on those from the spontaneous breaking of a $Z_2$ symmetry. Larger discrete symmetries have multiple degenerate vacua, leading to the domain walls in principle different from the simplest $Z_2$ domain wall. We take domain walls from $Z_N$ symmetry breaking as an illustrative study, and study in detail the $Z_3$ case, in which semi-analytical results for the tension and thickness of domain walls are derived. Explicit symmetry breaking terms lead to the dynamics of domain walls collapsing more complicated than the $Z_2$ case. Gravitational wave signals deviate from those from $Z_2$ domain walls.
