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2d topological phases 1multipartite entanglement 1nonlocal order parameters 1symmetry-protected topological phases 1symmetry-twisted entropies 1

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1 paper

cond-mat.str-el2026

Symmetry-Twisted Multi-Entropies: Order Parameters for 2D SPT Phases

Ramanjit Sohal, Michael Levin, Ruben Verresen

The paper proposes two nonlocal order parameters based on symmetry‑twisted multi‑entropies that can detect and distinguish all 2D bosonic symmetry‑protected topological phases with…