Local twist operators and a purity-gap-based chiral marker provide practical real-space indicators of topology in finite-temperature mixed states of the SSH model.
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Local Chern markers in ribbon geometries match bulk Středa markers, show size-dependent boundary deviations, and yield scaling exponents converging to theory in weakly disordered Chern insulators.
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Characterizing topology at nonzero temperature: Topological invariants and indicators in the extended SSH model
Local twist operators and a purity-gap-based chiral marker provide practical real-space indicators of topology in finite-temperature mixed states of the SSH model.
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Local topological markers for Chern insulators in ribbon geometry
Local Chern markers in ribbon geometries match bulk Středa markers, show size-dependent boundary deviations, and yield scaling exponents converging to theory in weakly disordered Chern insulators.