Article
Internal Mode Mechanism for Collective Energy Transport in Extended Systems
Author/s | Sánchez Sánchez, Ángel
Quintero, Niurka R. Mertens, Franz G. Morales-Molina, Luis |
Department | Universidad de Sevilla. Departamento de Física Aplicada I |
Publication Date | 2003 |
Deposit Date | 2015-04-16 |
Published in |
|
Abstract | We study directed energy transport in homogeneous nonlinear extended systems in the presence of homogeneous ac forces and dissipation. We show that the mechanism responsible for unidirectional motion of topological excitations ... We study directed energy transport in homogeneous nonlinear extended systems in the presence of homogeneous ac forces and dissipation. We show that the mechanism responsible for unidirectional motion of topological excitations is the coupling of their internal and translation degrees of freedom. Our results lead to a selection rule for the existence of such motion based on resonances that explain earlier symmetry analysis of this phenomenon. The direction of motion is found to depend both on the initial and the relative phases of the two harmonic drivings, even in the presence of noise. |
Funding agencies | Ministerio de Ciencia y Tecnología (MCYT). España |
Files | Size | Format | View | Description |
---|---|---|---|---|
Quintero_PRL_2003_internal.pdf | 111.1Kb | [PDF] | View/ | |