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arXiv 2511.02007hep-thmath-phmath.MPmath.QA
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作为拓扑对称性扩展的平移不变缺陷

Translation invariant defects as an extension of topological symmetries

Federico Ambrosino, Ingo Runkel, Gérard M. T. Watts

AI总结:

本文指出2d QFT中的拓扑缺陷可扩展为平移不变缺陷,后者构成包含前者的张量范畴,并通过手征三维TFT给出微扰描述,证明在Ising和Lee-Yang CFT变形中仍有平移不变缺陷存留。

摘要:

理解量子场论对称性的现代方式是通过其在不同维度上的拓扑缺陷。在本文中,我们关注2d QFT中的线缺陷,并指出拓扑缺陷自然地嵌入到一个更大的类别中,即平移不变缺陷。后者仍然允许非奇异融合,并且可以得到一个平移不变缺陷的张量范畴,其中拓扑缺陷作为全子范畴包含其中。我们通过手征三维拓扑场论给出了微扰共形场论中平移不变缺陷的简单微扰描述。我们在Ising CFT和Lee-Yang CFT的例子中表明,即使变形后没有拓扑缺陷存留,一些平移不变缺陷仍然存在。

英文摘要:

The modern way to understand symmetries of a quantum field theory is via its topological defects in various dimensions. In this contribution to the proceedings we focus on line defects in 2d QFT and we point out that topological defects naturally embed into a larger class, namely translation invariant defects. The latter still allow for non-singular fusion and one obtains a monoidal category of translation invariant defects which contains that of topological defects as a full subcategory. We give a simple perturbative description of translation invariant defects in a perturbed conformal field theory via chiral three-dimensional topological field theory. We show in the example of the Ising CFT and the Lee-Yang CFT that even if no topological defects survive the deformation, some translation invariant defects still do.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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