Subsystem information capacity distinguishes critical phases in the generalized Aubry-André-Harper model by exposing spatial heterogeneity, stepwise subsystem-size dependence, and subregion echoes linked to incommensurately distributed zeros in hopping terms.
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Tilt-induced quasiperiodic potential on a square lattice produces a mobility-edge-embedded Hofstadter butterfly with fractal dimension 0.8-1.0.
Adding a constant offset to the quasiperiodic potential in the diamond chain transforms anomalous mobility edges into conventional ones and demonstrates Avila's global theory fails to predict mobility edge locations.
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Probing critical phases in quasiperiodic systems via subsystem information capacity
Subsystem information capacity distinguishes critical phases in the generalized Aubry-André-Harper model by exposing spatial heterogeneity, stepwise subsystem-size dependence, and subregion echoes linked to incommensurately distributed zeros in hopping terms.
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Mobility-edge-embedded Hofstadter butterfly from a tilt-induced quasiperiodic potential
Tilt-induced quasiperiodic potential on a square lattice produces a mobility-edge-embedded Hofstadter butterfly with fractal dimension 0.8-1.0.
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Inapplicability of Avila's theory in the diamond chain with quasiperiodic disorder
Adding a constant offset to the quasiperiodic potential in the diamond chain transforms anomalous mobility edges into conventional ones and demonstrates Avila's global theory fails to predict mobility edge locations.