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Kramers-Wannier self-duality and non-invertible translation symmetry in quantum chains: a wave-function perspective

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arxiv 2410.06727 v2 pith:JWTYBL36 submitted 2024-10-09 cond-mat.stat-mech cond-mat.str-elhep-thquant-ph

classification cond-mat.stat-mechcond-mat.str-elhep-thquant-ph
keywords symmetrytranslationfusionkramers-wanniernon-invertibleoperatorself-dualitychain
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The Kramers-Wannier self-duality of critical quantum chains is examined from the perspective of model wave functions. We demonstrate, using the transverse-field Ising chain and the $3$-state Potts chain as examples, that the symmetry operator for the Kramers-Wannier self-duality follows in a simple and direct way from a `generalised' translation symmetry of the model wave function in the anyonic fusion basis. This translation operation, in turn, comprises a sequence of $F$-moves in the underlying fusion category. The symmetry operator thus obtained naturally admits the form of a matrix product operator and obeys non-invertible fusion rules. The findings reveal an intriguing connection between the (non-invertible) translation symmetry on the lattice and topological aspects of the conformal field theory describing the scaling limit.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Non-Invertible Symmetries Mixing with Witt Non-Trivial Quantum Cellular Automata

    quant-ph 2026-07 conditional novelty 8.0 of 10

    On a 3+1d cubic lattice, the duality (gauging) and 1-form-SPT-stacking operations generate local automorphisms whose fusion rules match the continuum only up to translations and non-trivial QCAs — semion, 3-fermion, a...

  2. Integrability and lattice discretizations of all Topological Defect Lines in minimal CFTs

    hep-th 2025-09 conditional novelty 6.0 of 10

    In integrable RSOS models, all Verlinde lines of diagonal minimal models are realized by spectral-parameter insertions: (1,s) lines are exactly topological on the lattice, (r>=2,s) lines only in the continuum limit, w...

  3. Systematic Construction of Kramers-Wannier-like Dualities in Quantum Lattice Models from Integrability

    hep-th 2025-09 conditional novelty 6.0 of 10

    Lax matrices built from a fermionic R-matrix yield a family of lattice Hamiltonians with explicitly constructed non-invertible Kramers-Wannier-like symmetry operators and spectrum-preserving dualities.

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