论文标题
部分可观测时空混沌系统的无模型预测
Domain walls seeding the electroweak phase transition
论文作者
论文摘要
拓扑缺陷可以充当种子宇宙学相变的局部杂质。在本文中，我们研究了域墙的情况，以及它们如何影响用$ Z_2 $ -ODD标量singlet扩展的标准模型中的electroweak相变。当过渡两步时，$ z_2 $对称的早期破裂意味着域壁的形成，然后可以充当第二步的成核位点。我们开发了一种基于尺寸降低的方法，以计算域壁表面3D理论中催化相变的速率。通过与标准均匀速率相比，我们得出结论，种子相变的速度通常更快，并且最终决定了相变的方式。我们评论对重力波和男性生成的现象学意义。
Topological defects can act as local impurities that seed cosmological phase transitions. In this paper we study the case of domain walls, and how they can affect the electroweak phase transition in the Standard Model extended with a $Z_2$-odd scalar singlet. When the transition is two-step, the early breaking of the $Z_2$ symmetry implies the formation of domain walls which can then act as nucleation sites for the second step. We develop a method based on dimensional reduction to calculate the rate of the catalyzed phase transition within the 3d theory on the domain wall surface. By comparison with the standard homogeneous rate, we conclude that the seeded phase transition is generically faster and it ultimately determines the way the phase transition is completed. We comment on the phenomenological implications for gravitational waves and baryogenesis.
