Controlling mobility via rapidly oscillating time-periodic stimulus
arXiv:1403.5056 · doi:10.1016/j.cplett.2014.03.062
Abstract
To address the dynamics of a Brownian particle on a periodic symmetric substrate under high-frequency periodic forcing with a vanishing time average, we construct an effective Langevin dynamics by invoking Kapitza-Landau time window. Our result is then exploited to simulate the mobility both for original and effective dynamics which are in good agreement with theoretical predictions. This close agreement and the enhancement of mobility are very robust against the tailoring of amplitude-to-frequency ratio which substantiates the correctness of our calculation. Present results may be illuminating for understanding the dynamics of cold atoms in electromagnetic fields.
This paper has been withdrawn by the author due to text overlap with arXiv:nlin/0301033 by other authors
References in corpus (8)
- Artificial Brownian motors: Controlling transport on the nanoscale
- Faster than Hermitian Quantum Mechanics
- Switching via quantum activation: A parametrically modulated oscillator
- Time independent description of rapidly oscillating potentials
- Versatile two-dimensional potentials for ultra-cold atoms
- Vibrational ratchets
- Trapping of Rb atoms by ac electric fields
- Interaction-induced negative mobility: realization in a system of two coupled Josephson junctions