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Transmission thresholds in time-periodically driven nonlinear disordered systems
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics . Linköping University, The Institute of Technology.ORCID iD: 0000-0001-6708-1560
2009 (English)Conference paper, Published paper (Other academic)
Abstract [en]

(Joint work with G. Kopidakis, S. Lepri, and S. Aubry) We study energy propagation in locally time-periodically driven disordered nonlinear chains. For frequencies inside the band of linear Anderson modes, three different regimes are observed with increasing driver amplitude: 1) Below threshold, localized quasiperiodic oscillations and no spreading; 2) Three different regimes in time close to threshold, with almost regular oscillations initially, weak chaos and slow spreading for intermediate times, and finally strong diffusion; 3) Immediate spreading for strong driving. The thresholds are due to simple bifurcations, obtained analytically for a single oscillator, and numerically as turning-points of the nonlinear response manifold for a full chain. Generically, the threshold is nonzero also for infinite chains.

Place, publisher, year, edition, pages
2009.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-52734OAI: oai:DiVA.org:liu-52734DiVA: diva2:285405
Conference
Anderson Localization in Nonlinear and Many-Body Systems International Workshop - March 16 - 20, 2009, Max Planck Institute for the Physics of Complex Systems, Dresden
Available from: 2010-01-11 Created: 2010-01-11 Last updated: 2014-01-13

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Anderson Localization in Nonlinear and Many-Body Systems

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Johansson, Magnus

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