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cond-mat.stat-mech2004
Ratchets in homogeneous extended systems: internal modes and the role of noise
Angel Sanchez, Luis Morales-Molina, Franz G. Mertens +3
We revisit the issue of directed motion induced by zero average forces in extended systems driven by ac forces. It has been shown recently that a directed energy current appears if…
cond-mat.stat-mech2003
Internal mode mechanism for collective energy transport in extended systems
Luis Morales-Molina, Niurka R. Quintero, Franz G. Mertens +1
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 un…