Two- and three-point functions in Landau gauge Yang-Mills-Higgs theory
Two- and three-point functions in Landau gauge Yang-Mills-Higgs theory
复制标题
朗道规范杨-米尔斯-希格斯理论中的两点和三点函数
DOI：
10.1007/jhep04(2014)006
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发表时间：
2014
影响因子：
5.4
通讯作者：
T. Mufti
中科院分区：
文献类型：
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作者：
A. Maas;T. Mufti
杨-米尔斯-希格斯理论提供了丰富的物理学知识。特别是，在其参数空间的某些区域，它具有类似 QCD 的行为，而在其他一些范围内，它具有类似希格斯的行为。此外，对于规范组 SU (2) 和 SU (2) 希格斯风味对称性的选择，它是标准模型的希格斯扇区。因此，可以在单一理论中研究过多的现象。这里使用晶格规范理论研究标准模型版本。选择非对齐最小朗道规范，其传播子和三点顶点将在类 QCD 和类希格斯域中确定。这允许测试关于限制如何工作以及限制和希格斯效应有何不同的各种建议。我们发现相关函数表现出不同的行为，具体取决于最低质量标量风味单线态是否比矢量三重态轻、更重且稳定，或者对于衰减成两个矢量三重态不稳定。
Yang-Mills-Higgs theory offers a rich set of physics. In particular, in some region of its parameter space it has QCD-like behavior, while in some other range it is Higgs-like. Furthermore, for the choice of the gauge group SU (2) and an SU (2) Higgs flavor symmetry it is the Higgs sector of the standard model. Therefore, it is possible to study a plethora of phenomena within a single theory. Here the standard-model version is studied using lattice gauge theory. Choosing non-aligned minimal Landau gauge, its propagators and three-point vertices will be determined in both the QCD-like and Higgs-like domains. This permits to test various proposals for how confinement works, as well as how confinement and the Higgs effect differ. The correlations functions are found to exhibit a different behavior, depending on whether the lowest mass scalar flavor singlet is lighter than the vector triplet, heavier and stable, or unstable against decay into two vector triplets.