Long-range light-mediated interactions induce singular dispersion bands in 1D and 2D subwavelength atom arrays that enable unsplit spreading of localized excitations, acting as a smoking-gun signature of singular band structure.
Defenu, Metastability and discrete spectrum of long- range systems, Proceedings of the National Academy of Sciences 118, e2101785118 (2021)
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Singular band Induced by Long-Range Interaction Enables Unsplit Spreading of Localized Excitations
Long-range light-mediated interactions induce singular dispersion bands in 1D and 2D subwavelength atom arrays that enable unsplit spreading of localized excitations, acting as a smoking-gun signature of singular band structure.