Authors characterize the MBL crossover via many-body quantum metric and localization parameter, extracting a localization length from wavefunction spread measurable by the metric.
Banerjee, Topological aspects of the berry phase, Fortschritte der Physik/Progress of Physics 44, 323 (1996), https://onlinelibrary.wiley.com/doi/pdf/10.1002/prop.2190440403
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Characterizing the Many Body Localization Crossover as a Metal-Insulator Transition: Localization length from Polarization and Quantum Metric
Authors characterize the MBL crossover via many-body quantum metric and localization parameter, extracting a localization length from wavefunction spread measurable by the metric.