Subdiffusion of nonlinear waves in quasiperiodic potentials (Articolo in rivista)

Type
Label
  • Subdiffusion of nonlinear waves in quasiperiodic potentials (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/1367-2630/14/10/103036 (literal)
Alternative label
  • Larcher M. [ 1,2 ] ; Laptyeva T.V. [ 3 ] ; Bodyfelt J.D. [ 3 ] ; Dalfovo, F. [ 1,2 ] ; Modugno M. [ 4,5 ] ; Flach S. [ 3,6 ] (2012)
    Subdiffusion of nonlinear waves in quasiperiodic potentials
    in New journal of physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Larcher M. [ 1,2 ] ; Laptyeva T.V. [ 3 ] ; Bodyfelt J.D. [ 3 ] ; Dalfovo, F. [ 1,2 ] ; Modugno M. [ 4,5 ] ; Flach S. [ 3,6 ] (literal)
Pagina inizio
  • 103036 (literal)
Pagina fine
  • 103036 (literal)
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  • 14 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 19 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Univ Trent, INO CNR BEC Ctr, I-38123 Povo, Italy [ 2 ] Univ Trent, Dipartimento Fis, I-38123 Povo, Italy [ 3 ] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany [ 4 ] Basque Fdn Sci, IKERBASQUE, E-48011 Bilbao, Spain [ 5 ] Univ Basque Country, Dept Theoret Phys & Hist Sci, E-48080 Bilbao, Spain [ 6 ] Massey Univ, New Zealand Inst Adv Study, Auckland, New Zealand (literal)
Titolo
  • Subdiffusion of nonlinear waves in quasiperiodic potentials (literal)
Abstract
  • We study the time evolution of wave packets in one-dimensional quasiperiodic lattices which localize linear waves. Nonlinearity (related to two-body interactions) has a destructive effect on localization, as observed recently for interacting atomic condensates (Lucioni et al 2011 Phys. Rev. Lett. 106 230403). We extend the analysis of the characteristics of the subdiffusive dynamics to large temporal and spatial scales. Our results for the second moment m(2) consistently reveal an asymptotic m(2) similar to t(1/3) and an intermediate m(2) similar to t(1/2) law. At variance with purely random systems (Laptyeva et al 2010 Europhys. Lett. 91 30001), the fractal gap structure of the linear wave spectrum strongly favours intermediate self-trapping events. Our findings give a new dimension to the theory of wave packet spreading in localizing environments. (literal)
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