Mixed-state topological order parameters for symmetry-protected fermion matter

We construct an observable mixed-state topological order parameter for symmetry-protected free-fermion matter. It resolves the entire table of topological insulators and superconductors, relying exclusively on the symmetry class, but not on unitary symmetries. It provides a robust, quantized signal...

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Bibliographic Details
Main Authors: Ze-Min Huang, Sebastian Diehl
Format: Article
Language:English
Published: American Physical Society 2025-07-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/h1qg-96kw
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