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Exact new mobility edges

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arxiv 2501.17523 v1 pith:U36MG4MQ submitted 2025-01-29 math.DS math-phmath.MPmath.SP

classification math.DSmath-phmath.MPmath.SP
keywords statescriticaledgesmobilityenergyexactextendedlocalized
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Mobility edges (ME), defined as critical energies that separate the extended states from the localized states, are a significant topic in quantum physics. In this paper, we demonstrate the existence of two exact new mobility edges for two physically realistic models: the first, referred to as Type II ME, represents the critical energy that separates the critical states from localized states; the second, referred to as Type III ME, marks the critical energy that separate the critical states from extended states. The proof is based on spectral analysis of singular Jacobi operator on the strip.

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  1. Distinct reentrant transitions in a quasi-periodic Raman lattice

    cond-mat.dis-nn 2026-07 conditional novelty 5.0 of 10

    Adding a uniform Zeeman term to a quasiperiodic Raman lattice produces reentrant mixed-phase transitions and a reentrant criticality transition as spin-orbit coupling or Zeeman strength varies.

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