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An insulated state in a non-interacting system arising from the destructive interference among multiple-scattering paths in a condensed matter system.

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Analog of Anderson localization caused by random hopping

Consider the tight-binding Hamiltonian: $$ H = \sum_i \epsilon_i a^\dagger_i a_i + \sum_i V_i (a^\dagger_i a_{i+1} + a^\dagger_{i+1} a_i) $$ Random on-site energy $\epsilon_i$ leads to the famous Ande …
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