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

Abstract

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.

6 pages + 5 pages appendices, 1 figure. v2: added references and minor clarifications, main results unchanged

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• Boundary SymTFT
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• On symmetry-resolved generalized entropies
• Revisiting the symmetry-resolved entanglement for non-invertible symmetries in $1+1$d conformal field theories
• Symmetry-Resolved Entanglement Entropy in Higher Dimensions
• Entropic Order Parameters for Categorical Symmetries in 2D-CFT