A note on entanglement entropy and topological defects in symmetric orbifold CFTs
Abstract
In this brief note we calculate the entanglement entropy in M N/SN symmetric orbifold CFTs in the presence of topological defects, which were recently constructed in Gutperle:2024vyp,Knighton:2024noc. We consider both universal defects which realize Rep(SN) non-invertible symmetry and non-universal defects. We calculate the sub-leading defect entropy/g-factor for defects at the boundary entangling surface as well as inside it.
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