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arXiv 1612.07752hep-lathep-phhep-th
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磁背景下紧化$SU(N)$规范理论的相结构

Phase structure of compactified $SU(N)$ gauge theories in magnetic backgrounds

Massimo D'Elia, Marco Mariti

摘要:

我们讨论了在紧致维流形上和存在与磁背景耦合的费米子场的情况下,非阿贝尔规范理论的性质。我们表明,不同的阶段可能会出现,对应于不同的实现中心对称性和平移不变性,这取决于紧化半径和磁场的大小。我们的讨论集中在一个$SU(3)$规范理论的情况下,在4维费米子场的基本表示,我们提供了一些探索性的数值晶格结果。

英文摘要:

We discuss the properties of non-abelian gauge theories formulated on manifolds with compactified dimensions and in the presence of fermionic fields coupled to magnetic backgrounds. We show that different phases may emerge, corresponding to different realizations of center symmetry and translational invariance, depending on the compactification radius and on the magnitude of the magnetic field. Our discussion focuses on the case of an $SU(3)$ gauge theory in 4 dimensions with fermions fields in the fundamental representation, for which we provide some exploratory numerical lattice results.

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