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arXiv 1407.2808hep-lat
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格点$SU(2)$ Yang-Mills理论中规范无关的“阿贝尔”和磁超优势及对偶迈斯纳效应

Gauge-independent "Abelian" and magnetic-monopole dominance, and the dual Meissner effect in lattice $SU(2)$ Yang-Mills theory

Seikou Kato, Kei-Ichi Kondo, Akihiro Shibata

摘要:

在四维Euclidean格点上的$SU(2)$ Yang-Mills理论中,我们证实了从基本表象中的威尔逊圈中提取的线性势的弦张力中存在规范无关的“阿贝尔”优势(或限制场优势)和规范无关的磁引力优势.通过演示连接夸克和反夸克的色电场流的压缩,观察到了双迈斯纳效应。此外,在色电通量的周围还感应出了环形磁感应电流。用对偶Ginzburg-Landau模型对结果进行拟合,确定了对偶超导的类型。因此,夸克禁闭的双超导体图像以规范无关的方式得到支持。这些结果是基于一个基于改变变量的晶格杨-米尔斯理论的基础上得到的一个非阿贝尔斯托克斯定理的威尔逊圈运营商相结合的一个la Cho-Duan-Ge-Faddeev-Niemi。我们给出了一个新的程序(称为减少)获得的颜色方向字段中起着核心作用,在这个重新制定。

英文摘要:

In the $SU(2)$ Yang-Mills theory on the four-dimensional Euclidean lattice, we confirm the gauge-independent "Abelian" dominance (or the restricted field dominance) and gauge-independent magnetic-monopole dominance in the string tension of the linear potential extracted from the Wilson loop in the fundamental representation. The dual Meissner effect is observed by demonstrating the squeezing of the chromoelectric field flux connecting a pair of quark and antiquark. In addition, the circular magnetic-monopole current is induced around the chromoelectric flux. The type of the dual superconductivity is also determined by fitting the result with the dual Ginzburg-Landau model. Thus the dual superconductor picture for quark confinement is supported in a gauge-independent manner. These results are obtained based on a reformulation of the lattice Yang-Mills theory based on the change of variables a la Cho-Duan-Ge-Faddeev-Niemi combined with a non-Abelian Stokes theorem for the Wilson loop operator. We give a new procedure (called the reduction) for obtaining the color direction field which plays the central role in this reformulation.

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