dorsal/arxiv
View SchemaSoliton motion in a parametrically ac-driven damped Toda lattice
| Authors | K. O. Rasmussen, Boris A. Malomed, A. R. Bishop, Niels Gronbech-Jensen |
|---|---|
| Categories | |
| ArXiv ID | patt-sol/9809006 |
| URL | https://arxiv.org/abs/patt-sol/9809006 |
| DOI | 10.1103/PhysRevE.58.6695 |
| Journal | Phys. Rev. E Vol. 58, Page 6695, (1998) |
Abstract
We demonstrate that a staggered parametric ac driving term can support stable progressive motion of a soliton in a Toda lattice with friction, while an unstaggered drivng force cannot. A physical context of the model is that of a chain of anharmonically coupled particles adsorbed on a solid surface of a finite size. The ac driving force models a standing acoustic wave excited on the surface. Simulations demonstrate that the state left behind the moving soliton, with the particles shifted from their equilibrium positions, gradually relaxes back to the equilibrium state that existed before the passage of the soliton. Perturbation theory predicts that the ac-driven soliton exists if the amplitude of the drive exceeds a certain threshold. The analytical prediction for the threshold is in reasonable agreement with that found numerically. Collisions between two counter propagating solitons were also simulated, demonstrating that the collisions are, essentially fully elastic.
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"abstract": "We demonstrate that a staggered parametric ac driving term can support stable\nprogressive motion of a soliton in a Toda lattice with friction, while an\nunstaggered drivng force cannot. A physical context of the model is that of a\nchain of anharmonically coupled particles adsorbed on a solid surface of a\nfinite size. The ac driving force models a standing acoustic wave excited on\nthe surface. Simulations demonstrate that the state left behind the moving\nsoliton, with the particles shifted from their equilibrium positions, gradually\nrelaxes back to the equilibrium state that existed before the passage of the\nsoliton. Perturbation theory predicts that the ac-driven soliton exists if the\namplitude of the drive exceeds a certain threshold. The analytical prediction\nfor the threshold is in reasonable agreement with that found numerically.\nCollisions between two counter propagating solitons were also simulated,\ndemonstrating that the collisions are, essentially fully elastic.",
"arxiv_id": "patt-sol/9809006",
"authors": [
"K. O. Rasmussen",
"Boris A. Malomed",
"A. R. Bishop",
"Niels Gronbech-Jensen"
],
"categories": [
"patt-sol",
"cond-mat.mtrl-sci",
"nlin.PS"
],
"doi": "10.1103/PhysRevE.58.6695",
"journal_ref": "Phys. Rev. E Vol. 58, Page 6695, (1998)",
"title": "Soliton motion in a parametrically ac-driven damped Toda lattice",
"url": "https://arxiv.org/abs/patt-sol/9809006"
},
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