Quantum diffusion in biased washboard potentials: strong friction limit
arXiv:cond-mat/0511597 · doi:10.1103/PhysRevE.73.031105
Abstract
Diffusive transport properties of a quantum Brownian particle moving in a tilted spatially periodic potential and strongly interacting with a thermostat are explored. Apart from the average stationary velocity, we foremost investigate the diffusive behavior by evaluating the effective diffusion coefficient together with the corresponding Peclet number. Corrections due to quantum effects, such as quantum tunneling and quantum fluctuations, are shown to substantially enhance the effectiveness of diffusive transport if only the thermostat temperature resides within an appropriate interval of intermediate values.
7 pages, 5 figures
References in corpus (17)
- Brownian motors: noisy transport far from equilibrium
- Brownian motors
- Fundamental Aspects of Quantum Brownian Motion
- Strong friction limit in quantum mechanics: the Quantum Smoluchowski equation
- Brownian motors: current fluctuations and rectification efficiency
- Quantum ratchet effect for vortices
- Demon-free quantum Brownian motors
- Phase diffusion and charging effects in Josephson junctions
- Quantum Brownian Motion With Large Friction
- 3-junction SQUID rocking ratchet
- Quantum tunneling of semifluxons
- Giant diffusion and coherent transport in tilted periodic inhomogeneous systems
- Interplay of frequency-synchronization with noise: current resonances, giant diffusion and diffusion-crests
- Controlling anomalous stresses in soft field-responsive systems
- Overdamped quantum phase diffusion and charging effects in Josephson junctions
- AC Driven Jumps Distribution on a Periodic Substrate
- Escape Times in Fluctuating Metastable Potential and Acceleration of Diffusion in Periodic Fluctuating Potentials
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