2004/10/12 by Jesús Gómez‐Gardeñes, J. Gomez-Gardenes, F. Falo +2
Physics and Astronomy · #Advanced Fiber Laser Technologies #Nonlinear Photonic Systems #Nonlinear Waves and Solitons #cond-mat.other #cond-mat.soft
paper · pdf · doi:10.1016/j.physleta.2004.09.049
published as Phys. Lett. A 332, 213 (2004) · 10 pages, 11 figures
openalex publication_date 2004/10/12 · arxiv created 2004/10/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Using continuation methods from the integrable Ablowitz-Ladik lattice, we have studied the structure of numerically exact mobile discrete breathers in the standard Discrete Nonlinear Schrodinger equation. We show that, away from that integrable limit, the mobile pulse is dressed by a background of resonant plane waves with wavevectors given by a certain selection rule. This background is seen to be essential for supporting mobile localization in the absence of integrability. We show how the variations of the localized pulse energy during its motion are balanced by the interaction with this background, allowing the localization mobility along the lattice.