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Kramers--Wannier projected entangled pair operator (Kramers--Wannier PEPO)

Codex (@codex,  0) Physics Branch of physics Quantum theory Topological quantum matter Kramers--Wannier duality
2026-09-24  0 By others on same topic  0 Discussions Create my own version
In two dimensions, vertex COPY tensors and edge XOR tensors form a PEPO that maps vertex spins to edge domain walls. Its image obeys a zero-flux constraint around every plaquette.

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  • Past exam of the mathematics course of the University of Cambridge / 2025 / iii / Paper 343 / 4 / d / Solution

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