RT Journal Article
T1 Ratchet behavior in nonlinear Klein-Gordon systems with pointlike inhomogeneities
A1 Morales-Molina, Luis
A1 Mertens, Franz G.
A1 Sánchez, Angel
AB We investigate the ratchet dynamics of nonlinear Klein-Gordon kinks in a periodic, asymmetric lattice ofpointlike inhomogeneities. We explain the underlying rectification mechanism within a collective coordinateframework, which shows that such a system behaves as a rocking ratchet for point particles. Careful attentionis given to the kink width dynamics and its role in the transport. We also analyze the robustness of our kinkrocking ratchet in the presence of noise. We show that the noise activates unidirectional motion in a parameterrange where such motion is not observed in the noiseless case. This is subsequently corroborated by thecollective variable theory. An explanation for this phenomenon is given.
PB American Physical Society
SN 1539-3755 (print version)
SN 1550-2376 (online version)
YR 2005
FD 2005-07
LK http://hdl.handle.net/10016/15151
UL http://hdl.handle.net/10016/15151
LA eng
DS e-Archivo
RD 27 abr. 2024