The imbalance decay exponent in a 2D disordered XY model grows with system size, evidence that finite-size 2D many-body localization is unstable, consistent with avalanche delocalization.
Phenomenology of the Prethermal Many- Body Localized Regime,
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Many-body delocalization with a two-dimensional 70-qubit superconducting quantum simulator
The imbalance decay exponent in a 2D disordered XY model grows with system size, evidence that finite-size 2D many-body localization is unstable, consistent with avalanche delocalization.