Coexistence of Anderson Localization and Quantum Scarring in Two Dimensions

• URL: http://arxiv.org/abs/2512.20788v2
• Date: Mon, 29 Dec 2025 13:14:25 GMT
• Title: Coexistence of Anderson Localization and Quantum Scarring in Two Dimensions
• Authors: Fartash Chalangari, Anant Vijay Varma, Joonas Keski-Rahkonen, Esa Räsänen,
• Abstract summary: Scaling theory predicts that all states localize in two dimensions, yet energy-dependent localization lengths and finite system size allow these regimes to coexist.<n>We demonstrate that this coexistence produces distinct, robust signatures in both spatial intensity patterns and spectral statistics.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We study finite two-dimensional disordered systems with periodic confinement. At low energies, eigenstates exhibit strong Anderson localization, while at higher energies a subset of states forms variational scars with anisotropic intensity patterns that violate random wave expectations. Scaling theory predicts that all states localize in two dimensions, yet energy-dependent localization lengths and finite system size allow these regimes to coexist. We demonstrate that this coexistence produces distinct, robust signatures in both spatial intensity patterns and spectral statistics that are directly observable in mesoscopic electronic, photonic, and cold atom systems.

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