TRANSPORT AND DYNAMICAL PROPERTIES OF INERTIAL RATCHETS

M.F.CARUSELA; A.J.FENDRIK; L.ROMANELLI

PHYSICA A - STATISTICAL AND THEORETICAL PHYSICS

Elsevier

Año: 2009 vol. 388 p. 4017 - 4024

0378-4371

In this paper we discuss the dynamics and transport properties of a massive particle, in a time dependent periodic potential of the ratchet type, with a dissipative environment. The directional currents and characteristics of the motion are studied as the specific frictional coecient varies, finding that the stationary regime is strongly dependent on this parameter. The maximal Lyapunov exponent and the current show large fluctuations and inversions, therefore for some range of the control parameter, this inertial ratchet could originate a mass separation device. Also an exploration of the eect of a random force on the system is performed.