Anomaly matching, (axial) Schwinger models, and high-T super Yang-Mills domain walls

Anomaly matching, (axial) Schwinger models, and high-T super Yang-Mills domain walls
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异常匹配、(轴向)Schwinger 模型和高温超杨-米尔斯畴壁

DOI:
10.1007/jhep09(2018)076
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发表时间:
2018
影响因子:
5.4
通讯作者:
Poppitz, Erich
Poppitz, Erich
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Anber, Mohamed M.;Poppitz, Erich

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本文研究了q电荷二维Schwinger模型中的离散手征和中心对称Hooft反常匹配。我们表明,离散对称算子的代数涉及一个中心的扩展,这意味着存在的q真空,手征和中心对称性自发破缺。然后,我们论证了在高温SU(2)超杨-米尔斯理论的中心对称破缺真空之间的畴壁世界体积理论中出现了q= 2模型的轴向版本,并且它继承了四维体的离散t Hooft反常。施温格模型的结果表明,高温畴壁表现出令人惊讶的丰富结构:它支持非零费米子凝聚和类空威尔逊环的周长定律,从而反映了强耦合四维低温理论的许多性质。我们还讨论了多个伴随费米子和可能的晶格测试理论的推广。
We study the discrete chiral-and center-symmetry’t Hooft anomaly matching in the charge-q two-dimensional Schwinger model. We show that the algebra of the discrete symmetry operators involves a central extension, implying the existence of q vacua, and that the chiral and center symmetries are spontaneously broken. We then argue that an axial version of the q= 2 model appears in the worldvolume theory on domain walls between center-symmetry breaking vacua in the high-temperature SU (2)super-Yang-Mills theory and that it inherits the discrete’t Hooft anomalies of the four-dimensional bulk. The Schwinger model results suggest that the high-temperature domain wall exhibits a surprisingly rich structure: it supports a non-vanishing fermion condensate and perimeter law for spacelike Wilson loops, thus mirroring many properties of the strongly coupled four-dimensional low-temperature theory. We also discuss generalizations to theories with multiple adjoint fermions and possible lattice tests.
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