格点Yang-Mills理论中规范变量的精确分解
The exact decomposition of gauge variables in lattice Yang-Mills theory
摘要:
在本文中,我们考虑的杨-米尔斯场的分解一个la Cho-Faddeev-Niemi,这是由近藤,Shinohara和Murakami在连续统公式的扩展的格版本。对于SU(N)规范群,我们提出了一组定义方程,用来描述规范链变量的分解,并精确地求解了它们,而不使用以前研究SU(2)和SU(3)时所采用的计算方法。结果得到了SU(N)规范链变量分解的一般形式,并证实了以前对SU(2)和SU(3)的结果。
英文摘要:
In this paper, we consider lattice versions of the decomposition of the Yang- Mills field a la Cho-Faddeev-Niemi, which was extended by Kondo, Shinohara and Murakami in the continuum formulation. For the SU(N) gauge group, we propose a set of defining equations for specifying the decomposition of the gauge link variable and solve them exactly without using the ansatz adopted in the previous studies for SU(2) and SU(3). As a result, we obtain the general form of the decomposition for SU(N) gauge link variables and confirm the previous results obtained for SU(2) and SU(3).
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