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|Title: ||Internal mode mechanism for collective energy transport in extended systems|
|Author(s): ||Morales-Molina, Luis|
Quintero, Niurka R.
Mertens, Franz G.
|Publisher: ||American Physical Society|
|Issued date: ||5-Dec-2003|
|Citation: ||Physical Review Letters, vol. 91, n. 23, 5 dec. 2003. Pp. 1-4|
|ISSN: ||0031-9007 (print version)|
1079-7114 (online version)
|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 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.|
|Sponsor: ||This work has been supported by the Ministerio de Ciencia y Tecnología of Spain through Grants No. BFM2001-3878-C02 (N. R.Q.), No. BFM2000-0006, and No. BFM2003-07749-C05-01 (A. S.), by the Junta de Andalucı´a under Project No. FQM-0207, by DAAD (Germany) A0231253/Ref. 314, and by the International Research Training Group "Nonequilibrium Phenomena and Phase Transitions in Complex Systems."|
|Publisher version: ||http://dx.doi.org/10.1103/PhysRevLett.91.234102|
|Appears in Collections:||DM - GISC - Artículos de Revistas|
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