Stabilization of ratchet dynamics by weak periodic signals

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

Volumn 63, Issue 6, 2001, Pages

  Barbi, Maria ^a,b   Salerno, Mario ^a,b  

^a UNIVERSITY OF SALERNO   (Italy)

^b INFM   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

MATHEMATICAL MODELS; SPURIOUS SIGNAL NOISE; TRANSPORT PROPERTIES; VELOCITY;

RATCHET DYNAMICS; STABILIZATION PHENOMENON; SUBHARMONIC STABILIZATION EFFECT; UNDERDAMPED RATCHET; WEAK PERIODIC SIGNAL;

DYNAMICS;

EID: 0035362871     PISSN: 1063651X     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevE.63.066212     Document Type: Article

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29. As shown in Ref. 24, the presence of coexisting orbits in some ranges of the parameter a could lead to hysteresis, so that the width of a locked step can depend on how a is varied during the simulations. In order to reduce this effect, we perform our simulations in such a way that a is always varied starting from one value inside this region and going first toward smaller and then toward bigger values. In this way, the width of the step is maximized.