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arXiv 1508.01042hep-lat
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$SU(2)$格点规范理论中的彩色平面涡旋和手征对称性破缺

Colorful plane vortices and Chiral Symmetry Breaking in $SU(2)$ Lattice Gauge Theory

Seyed Mohsen Hosseini Nejad, Manfried Faber, Roman Höllwieser

摘要:

我们研究了具有颜色结构的平面涡旋。在连续介质中和格点上研究了这种彩色平面涡旋的拓扑荷和规范作用。这些配置是真空到真空的转变,改变两个真空之间的缠绕数,导致连续体中的拓扑电荷$Q=-1$。当这些涡旋的时间范围增大后,晶格拓扑荷趋近于$-1$,从而满足了指数定理。我们分析了这些彩色平面涡旋背景中重叠狄拉克算符的低阶模,并与球形涡旋的低阶模进行了比较。它们显示出自发手征对称性破缺的特征性质。

英文摘要:

We investigate plane vortices with color structure. The topological charge and gauge action of such colorful plane vortices are studied in the continuum and on the lattice. These configurations are vacuum to vacuum transitions changing the winding number between the two vacua, leading to a topological charge $Q=-1$ in the continuum. After growing temporal extent of these vortices, the lattice topological charge approaches $-1$ and the index theorem is fulfilled. We analyze the low lying modes of the overlap Dirac operator in the background of these colorful plane vortices and compare them with those of spherical vortices. They show characteristic properties for spontaneous chiral symmetry breaking.

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