Bubble wall velocities in the Standard Model and beyond
Bubble wall velocities in the Standard Model and beyond
复制标题
标准模型及其他模型中的气泡壁速度
DOI：
10.1088/1475-7516/2018/12/034
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发表时间：
2018
影响因子：
6.4
通讯作者：
T. Konstandin
中科院分区：
文献类型：
--
作者：
G. Dorsch;S. Huber;T. Konstandin
我们目前的结果，在宇宙学的一级相变的凝聚形式的气泡壁速度和气泡壁厚度。我们的结果是标准模型的最小扩展，但原则上适用于更广泛的设置类。我们对这个模型的第一个假设是，只有电弱希格斯粒子在相变过程中获得真空期望值。第二，大部分摩擦是由电弱规范玻色子和顶夸克产生的。在这些假设下，可以推导出气泡壁速度和厚度作为等离子体的两个平衡性质的函数：相变的强度和沿沿着气泡壁的压力差。
We present results for the bubble wall velocity and bubble wall thickness during a cosmological first-order phase transition in a condensed form. Our results are for minimal extensions of the Standard Model but in principle are applicable to a much broader class of settings. Our first assumption about the model is that only the electroweak Higgs is obtaining a vacuum expectation value during the phase transition. The second is that most of the friction is produced by electroweak gauge bosons and top quarks. Under these assumptions the bubble wall velocity and thickness can be deduced as a function of two equilibrium properties of the plasma: the strength of the phase transition and the pressure difference along the bubble wall.