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Transport and dynamical properties of inertial ratchets |
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| Authors: | MF Carusela AJ Fendrik L Romanelli |
| Institution: | a Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Argentina b Instituto de Ciencias, Universidad de General Sarmiento, J.M.Gutiérrez 1150, (1613) Los Polvorines, Buenos Aires, Argentina c Departamento de Física, J. J. Giambiaggi, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, (1428) Buenos Aires, Argentina |
| Abstract: | In this paper we discuss the dynamics and transport properties of a massive particle in a ratchet type potential immersed in a dissipative environment. The directional currents and characteristics of the motion are studied as the specific frictional coefficient 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 effect of a random force on the system is performed. |
| Keywords: | 05 40 Ca 05 40 Jc 05 60 Cd |
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