论文标题
$ s_3 $离散对称性的两higgs-doublet模型中的双电动相位过渡
Dual electroweak phase transition in the two-Higgs-doublet model with the $S_3$ discrete symmetry
论文作者
论文摘要
在这项工作中，用$ S_3 $离散对称性的两种型doublet模型仔细研究了由两个阶段组成的双电子相变（EWPT）。 $ s_3 $的作用是与原始的两-higgs-doublet型号（2HDM）相比，要进一步分开electroweak相变的阶段。所考虑的模型中电动相过渡$（S）$的强度足以容纳一阶EWPT，特别是$ 1 <s <2.8 $。事实证明，两个真空期望值（VEVS），$ \tanβ= v_2/v_1 $之间的比率没有影响相变强度。该比率仅影响导致一阶相变的质量域。此外，在本文中，我们将清楚地表明，在一个以上产生质量的标量字段的模型中研究EWPT时，人们需要在多个阶段分析相变的问题。换句话说，对称性的第一阶段与第二阶段的效果是通过建议简化了负责初始阶段的希格斯玻色子的真空期望值与下一个阶段的田地成正比。
In this work, dual electroweak phase transition (EWPT) consisting of two phases, is carefully studied in the two-Higgs-doublet model with the $S_3$ discrete symmetry. The role of $S_3$ here is to further separate the stages of the electroweak phase transition, compared to that of the original two-Higgs-doublet model (2HDM). The strength of the electroweak phase transition $(S)$ in the model under consideration is large enough for the first-order EWPT, specifically $1 < S < 2.8$. The ratio between the two vacuum expectation values (VEVs), $\tanβ= v_2/v_1$, is proven to have no effects on the strength of the phase transition. This ratio only affects the mass domain that causes the first-order phase transition. Furthermore, in this paper we will show clearly that when studying the EWPT in models of more than one scalar field that generates masses, one needs to analyze the problem of phase transition under multiple stages. In other words, the effect of the first stage of symmetry breaking to the second one, is to simplify by suggestion that vacuum expectation value of the Higgs boson responsible for the initial stage is proportional to that of the field for the next stage.
