Topological terms in Composite Higgs models
Topological terms in Composite Higgs models
复制标题
复合希格斯模型中的拓扑术语
DOI：
10.1007/jhep11(2018)169
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发表时间：
2018
影响因子：
5.4
通讯作者：
B. Gripaios
中科院分区：
文献类型：
--
作者：
Joe Davighi;B. Gripaios
我们应用最近的分类拓扑作用项复合希格斯模型的基础上，各种陪集空间G/H，并讨论其现象学。拓扑项都可以通过积分（可能只是局部定义的）微分形式获得，有两种类型，对现象学有着本质上不同的结果。第一类项（出现在基于SO（5）/SO（4）的极小模型中）是量子力学中Aharonov-Bohm相的场论推广。这一项的唯象效应只出现在非微扰水平，并导致希格斯扇区的P和CP破坏。第二类项（出现在基于SO（6）/SO（5）的模型中）是量子力学中狄拉克算符的场论推广，甚至在经典水平上也有物理效应。也许最重要的是，测量这样一个项的系数可以让人们探索潜在的微观理论的结构。基于SO（6）/SO（4）的模型，包含2个Higgs二重态和1个单重态，揭示了一个特别丰富的拓扑结构，有6个不同的项.在相应的耦合中，一个是整数，一个是相位。
We apply a recent classification of topological action terms to Composite Higgs models based on a variety of coset spaces G/H and discuss their phenomenology. The topological terms, which can all be obtained by integrating (possibly only locally-defined) differential forms, come in one of two types, with substantially differing consequences for phenomenology. The first type of term (which appears in the minimal model based on SO (5)/SO (4)) is a field theory generalization of the Aharonov-Bohm phase in quantum mechanics. The phenomenological effects of such a term arise only at the non-perturbative level, and lead to P and CP violation in the Higgs sector. The second type of term (which appears in the model based on SO (6)/SO (5)) is a field theory generalization of the Dirac monopole in quantum mechanics and has physical effects even at the classical level. Perhaps most importantly, measuring the coefficient of such a term can allow one to probe the structure of the underlying microscopic theory. A particularly rich topological structure, with 6 distinct terms, is uncovered for the model based on SO (6)/SO (4), containing 2 Higgs doublets and a singlet. Of the corresponding couplings, one is an integer and one is a phase.