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Related Experiment Videos

Wave scattering by discrete breathers.

S Flach1, A E Miroshnichenko, M V Fistul

  • 1Max-Planck-Institut fur Physik komplexer Systeme, Nothnitzer Strasse 38, D-01187 Dresden, Germany.

Chaos (Woodbury, N.Y.)
|June 5, 2003
PubMed
Summary
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This study investigates how discrete breathers in nonlinear lattices affect linear wave scattering. The findings reveal that breather dynamics significantly influence wave transmission, creating unique interference patterns.

Area of Science:

  • Nonlinear dynamics
  • Condensed matter physics
  • Wave propagation

Background:

  • Discrete breathers are localized, time-periodic excitations in nonlinear lattices.
  • These breathers act as dynamic scattering potentials for linear waves.
  • Understanding wave scattering is crucial for nonlinear system analysis.

Purpose of the Study:

  • To theoretically investigate linear wave scattering by discrete breathers in 1D nonlinear lattices.
  • To analyze the influence of breather properties on wave transmission coefficients.
  • To explore different types of breathers (acoustic, optical, rotobreathers) and their scattering characteristics.

Main Methods:

  • Theoretical analysis of linear wave scattering.
  • Calculation of transmission coefficients.

Related Experiment Videos

  • Study of dependence on wave number (q) and breather frequency (Omega(b)).

    • Main Results:

    • Discrete breathers create localized, time-periodic scattering potentials.
    • Elastic scattering shows interference patterns due to breather-induced channels.
    • Transmission coefficients vary with wave number and breather frequency.
    • Internal breather dynamics critically affect scattering properties.

    Conclusions:

    • Discrete breathers significantly alter linear wave scattering in nonlinear lattices.
    • The internal dynamics of breathers are key to understanding observed transmission properties.
    • This research provides insights into wave phenomena in complex nonlinear systems.