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Soliton dynamics in linearly coupled discrete nonlinear Schrödinger equations

Author

Listed:
  • Trombettoni, A.
  • Nistazakis, H.E.
  • Rapti, Z.
  • Frantzeskakis, D.J.
  • Kevrekidis, P.G.

Abstract

We study soliton dynamics in a system of two linearly coupled discrete nonlinear Schrödinger equations, which describe the dynamics of a two-component Bose gas, coupled by an electromagnetic field, and confined in a strong optical lattice. When the nonlinear coupling strengths are equal, we use a unitary transformation to remove the linear coupling terms, and show that the existing soliton solutions oscillate from one species to the other. When the nonlinear coupling strengths are different, the soliton dynamics is numerically investigated and the findings are compared to the results of an effective two-mode model. The case of two linearly coupled Ablowitz–Ladik equations is also briefly discussed.

Suggested Citation

  • Trombettoni, A. & Nistazakis, H.E. & Rapti, Z. & Frantzeskakis, D.J. & Kevrekidis, P.G., 2009. "Soliton dynamics in linearly coupled discrete nonlinear Schrödinger equations," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 80(4), pages 814-824.
    • Handle: RePEc:eee:matcom:v:80:y:2009:i:4:p:814-824
    DOI: 10.1016/j.matcom.2009.08.033
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    Cited by:

    1. Lepri, Stefano & Pikovsky, Arkady, 2022. "Phase-locking dynamics of heterogeneous oscillator arrays," Chaos, Solitons & Fractals, Elsevier, vol. 155(C).
    2. Cabanas, A.M. & Vélez, J.A. & Pérez, L.M. & Díaz, P. & Clerc, M.G. & Laroze, D. & Malomed, B.A., 2021. "Dissipative structures in a parametrically driven dissipative lattice: Chimera, localized disorder, continuous-wave, and staggered states," Chaos, Solitons & Fractals, Elsevier, vol. 146(C).
    3. Iubini, Stefano & Politi, Antonio, 2021. "Chaos and localization in the discrete nonlinear Schrödinger equation," Chaos, Solitons & Fractals, Elsevier, vol. 147(C).

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