Subdiffusion of nonlinear waves in quasiperiodic potentials

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dc.citation.volume14
dc.contributor.authorLarcher M
dc.contributor.authorLaptyeva TV
dc.contributor.authorBodyfelt JD
dc.contributor.authorDalfovo F
dc.contributor.authorModugno M
dc.contributor.authorFlach S
dc.date.available23/10/2012
dc.date.issued1/10/2012
dc.description.abstractWe 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 ∼ t 1/3 and an intermediate m 2 ∼ 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. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
dc.description.publication-statusPublished
dc.format.extent? - ? (19)
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000310439000002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifierARTN 103036
dc.identifier.citationNEW JOURNAL OF PHYSICS, 2012, 14 pp. ? - ? (19)
dc.identifier.doi10.1088/1367-2630/14/10/103036
dc.identifier.elements-id182228
dc.identifier.harvestedMassey_Dark
dc.identifier.issn1367-2630
dc.identifier.urihttps://hdl.handle.net/10179/7475
dc.languageEnglish
dc.publisherIOP PUBLISHING LTD
dc.relation.isPartOfNEW JOURNAL OF PHYSICS
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectPhysics, Multidisciplinary
dc.subjectPhysics
dc.subjectPHYSICS, MULTIDISCIPLINARY
dc.subjectBOSE-EINSTEIN CONDENSATE
dc.subjectSYSTEMS
dc.subjectLATTICES
dc.subjectLOCALIZATION
dc.subjectINSTABILITY
dc.subjectBREATHERS
dc.subjectCHAIN
dc.subject.anzsrc02 Physical Sciences
dc.titleSubdiffusion of nonlinear waves in quasiperiodic potentials
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
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