Directed transport of Brownian particles in a double symmetric potential
arXiv:cond-mat/0404731 · doi:10.1103/PhysRevE.70.011102
Abstract
We investigate the dynamics of Brownian particles in internal state- dependent symmetric and periodic potentials. Although no space or time symmetry of the Hamiltonian is broken, we show that directed transport can appear. We demonstrate that the directed motion is induced by breaking the symmetry of the transition rates between the potentials when these are spatially shifted. Finally, we discuss the possibility of realizing our model in a system of cold particles trapped in optical lattices.
arXiv commentto appear in Physical Review E
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- Characterisation of a three-dimensional Brownian motor in optical lattices
- Experimental measurement of efficiency and transport coherence of a cold atom Brownian motor in optical lattices
- Generation of multiple power-balanced laser beams for quantum-state manipulation experiments with phase-stable double optical lattices
- Phase diffusion and fluctuations in a dissipative Bose-Josephson junction
- Breaking the symmetry of a Brownian motor with symmetric potentials
- Directed transport with real-time steering and drifts along pre-designed paths using a Brownian motor
- Noise-cancellation algorithm for simulations of Brownian particles
- Controllable 3D atomic Brownian motor in optical lattices
- Directed transport in equilibrium