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arXiv 2409.02162hep-thcond-mat.stat-mechcond-mat.str-el
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CFT中扭结与任意子扇区纠缠的广义对称性分解

Generalized Symmetry Resolution of Entanglement in CFT for Twisted and Anyonic sectors

Arpit Das, Javier Molina-Vilaplana, Pablo Saura-Bastida

AI总结:

本研究针对带非可逆对称性的(1+1)维CFT,提出基于扭结与任意子扇区的纠缠熵广义对称分解方法,定义了相关广义荷矩,并发现紫外次领头阶纠缠均分破缺的现象。

摘要:

本文针对具有范畴性非可逆对称性的(1+1)维有理共形场论(RCFT),给出了纠缠熵(EE)的全面对称性分解。这相当于相对于理论的广义扭结荷扇区与任意子荷扇区对纠缠进行对称性分解。任意子扇区标记了定义该对称性的模融合范畴的不可约表示,可通过编码CFT对称性特征的(2+1)维对称性拓扑场论(SymTFT)来理解。基于此,我们定义了纠缠熵对称性分解所需的、依赖边界的相应广义荷矩,这是本工作的主要结果。此外,与可逆对称性的情况相反,我们观察到在紫外截止的次领头阶,不同荷扇区之间的纠缠均分发生破缺。

英文摘要:

A comprehensive symmetry resolution of the entanglement entropy (EE) in $(1+1)$-d rational conformal field theories (RCFT) with categorical non-invertible symmetries is presented. This amounts to symmetry resolving the entanglement with respect to the generalized twisted and anyonic charge sectors of the theory. The anyonic sectors label the irreducible representations of a modular fusion category defining the symmetry and can be understood through the $(2+1)$-d symmetry topological field theory (SymTFT) that encodes the symmetry features of the CFT. Using this, we define the corresponding generalized boundary dependent charged moments necessary for the symmetry resolution of the entanglement entropy, which is the main result of this work. Furthermore, contrary to the case of invertible symmetries, we observe the breakdown of entanglement equipartition between different charged sectors at the next-to-leading order in the ultraviolet cutoff.

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