A note on entanglement entropy and topological defects in symmetric orbifold CFTs

2024/06/16 by Michael Gutperle, Yanyan Li, Gutperle, Michael +5 · 3 citations
Medicine · Mathematics · Neuroscience · #Pain Mechanisms and Treatments #Homotopy and Cohomology in Algebraic Topology #Axon Guidance and Neuronal Signaling

paper · pdf · doi:10.48550/arxiv.2406.10967

Abstract

In this brief note we calculate the entanglement entropy in M^{⊗ N}/S_N symmetric orbifold CFTs in the presence of topological defects, which were recently constructed in \citeGutperle:2024vyp,Knighton:2024noc. We consider both universal defects which realize Rep(S_N) 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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