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Auto-resonance process under the interaction of solitons with external force and dissipation

Author

Listed:
  • Flamarion, Marcelo V.
  • Pelinovsky, Efim

Abstract

Algebraic soliton interactions with an external force in the presence of Reynolds viscosity is investigated. In the absence of an external force, the soliton amplitude decays over time. However, when an external force is introduced, it acts as a restoring force, and in some cases, the soliton’s amplitude is preserved. A dynamical system that governs the soliton amplitude and its crest position is obtained assuming a weak force and weak viscosity. For an external force with a Gaussian shape, the dynamical system has two equilibrium points, namely, a saddle and a stable spiral. Asymptotic results are compared with direct numerical simulations, and a strong qualitative agreement is observed. The stable spiral predicted by the asymptotic theory is stable in the sense that soliton solutions with a chosen amplitude and crest position near the spiral point are attracted to it, preserving their amplitude and location.

Suggested Citation

  • Flamarion, Marcelo V. & Pelinovsky, Efim, 2024. "Auto-resonance process under the interaction of solitons with external force and dissipation," Chaos, Solitons & Fractals, Elsevier, vol. 189(P2).
    • Handle: RePEc:eee:chsofr:v:189:y:2024:i:p2:s0960077924012645
    DOI: 10.1016/j.chaos.2024.115712
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