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arXiv 0803.0176hep-th
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基于变量变换的SU(N)Yang-Mills理论的改进

Reformulating SU(N) Yang-Mills theory based on change of variables

Kei-Ichi Kondo, Toru Shinohara, Takeharu Murakami

摘要:

我们提出了一种新的SU(N)杨-米尔斯理论,它是用新的场变量来表示的,这些场变量是由原来的杨-米尔斯规范场的变量的非线性变化得到的。重新表述的Yang-Mills理论使我们能够通过明确提取磁单极子和涡旋等拓扑自由度来研究低能动力学,以阐明夸克禁闭的机制。杨-米尔斯理论中的对偶超导性是以规范不变的方式来理解的,正如最近威尔逊圈算子的非阿贝尔斯托克斯定理所证明的那样,尽管这种重新表述的基本思想是基于规范势的Cho-Faddeev-Niemi分解。

英文摘要:

We propose a new version of SU(N) Yang-Mills theory reformulated in terms of new field variables which are obtained by a nonlinear change of variables from the original Yang-Mills gauge field. The reformulated Yang-Mills theory enables us to study the low-energy dynamics by explicitly extracting the topological degrees of freedom such as magnetic monopoles and vortices to clarify the mechanism for quark confinement. The dual superconductivity in Yang-Mills theory is understood in a gauge-invariant manner, as demonstrated recently by a non-Abelian Stokes theorem for the Wilson loop operator, although the basic idea of this reformulation is based on the Cho-Faddeev-Niemi decomposition of the gauge potential.

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