The localization length in a flat Chern band with weak disorder is claimed to be proportional to a quantum geometric length set by the band's quantum metric, with a universal to non-universal crossover in the critical exponent.
As a result,W serves as the only energy scale of the system and is set to unity once for all
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Quantum geometric localization length and localization criticality in an ideally flat Chern band
The localization length in a flat Chern band with weak disorder is claimed to be proportional to a quantum geometric length set by the band's quantum metric, with a universal to non-universal crossover in the critical exponent.