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.
Resta, Quantum-Mechanical Position Operator in Ex- tended Systems, Phys
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Spatially modulated Dirac-delta lattices generate Hofstadter-like spectra and enable adiabatic control of topological transport characterized by non-trivial Chern numbers.
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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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Emergent topological properties in spatially modulated sub-wavelength barrier lattices
Spatially modulated Dirac-delta lattices generate Hofstadter-like spectra and enable adiabatic control of topological transport characterized by non-trivial Chern numbers.