CNCS Center for Nonlinear and Complex Systems
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Publications [#311986] of Joshua Socolar

Papers Published

  1. Marcoux, C; Socolar, JES, Sparse phonon modes of a limit-periodic structure, Physical Review. B, Condensed Matter, vol. 93 no. 17 (May, 2016), American Physical Society, ISSN 0163-1829 [PhysRevB.93.174102], [doi]
    (last updated on 2019/06/25)

    Limit-periodic structures are well ordered but nonperiodic, and hence have nontrivial vibrational modes. We study a ball and spring model with a limit-periodic pattern of spring stiffnesses and identify a set of extended modes with arbitrarily low participation ratios, a situation that appears to be unique to limit-periodic systems. The balls that oscillate with large amplitude in these modes live on periodic nets with arbitrarily large lattice constants. By studying periodic approximants to the limit-periodic structure, we present numerical evidence for the existence of such modes, and we give a heuristic explanation of their structure.