Interaction-induced corner localization of doublons in a 2D non-Hermitian Bose-Hubbard model constitutes a second-order skin effect with corner-mode count growing linearly with system size.
Peng , author Ş
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Interaction-Induced Second-Order Skin Effect
Interaction-induced corner localization of doublons in a 2D non-Hermitian Bose-Hubbard model constitutes a second-order skin effect with corner-mode count growing linearly with system size.