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arXiv 0901.3298hep-th
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SU束缚相中的孤子费米子(2)Yang-Mills理论

Solitonic fermions in the confining phase of SU(2) Yang-Mills theory

Julian Moosmann

摘要:

我们考虑了SU(2)Yang-Mills热力学中出现的非自相交和单重自相交中心涡环统计系综中的空间粗粒化。这种粗粒化是由于嘈杂的环境和描述的曲线收缩流的中心涡环局部嵌入在一个二维平面。一个有效的“行动”,这是在纯粹的几何术语定义的重整化群流,是由曲线收缩演化。在非自相交的中心涡环的情况下,我们观察到的有效的“行动”的临界行为,只要中心涡环消失的频谱的限制相由于曲线收缩。这表明存在一个渐近质量间隙。一个完全出乎意料的行为,在合奏的一重自相交的中心涡环是连接到自发出现的秩序。我们推测,平面的物理,一折的自相交中心涡环是相关的二维系统表现出高温超导性。

英文摘要:

We consider spatial coarse-graining in statistical ensembles of non-selfintersecting and one-fold selfintersecting center-vortex loops as they emerge in the confining phase of SU(2) Yang-Mills thermodynamics. This coarse-graining is due to a noisy environment and described by a curve shrinking flow of center-vortex loops locally embedded in a two-dimensional flat plane. The renormalization-group flow of an effective `action', which is defined in purely geometric terms, is driven by the curve shrinking evolution. In the case of non-selfintersecting center-vortex loops, we observe critical behavior of the effective `action' as soon as the center-vortex loops vanish from the spectrum of the confining phase due to curve shrinking. This suggest the existence of an asymptotic mass gap. An entirely unexpected behavior in the ensemble of one-fold selfintersecting center-vortex loops is connected with the spontaneous emergence of order. We speculate that the physics of planar, one-fold selfintersecting center-vortex loops to be relevant for two-dimensional systems exhibiting high-temperature superconductivity.

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