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Giant acceleration of free diffusion by use of titled periodic potentials
Reimann, P.; Broeck, C. van den (Christian), 1954-; Linke, H.; Hänggi, Peter; Rubí Capaceti, José Miguel; Pérez Madrid, Agustín
Universitat de Barcelona
The effective diffusion coefficient for the overdamped Brownian motion in a tilted periodic potential is calculated in closed analytical form. Universality classes and scaling properties for weak thermal noise are identified near the threshold tilt where deterministic running solutions set in. In this regime the diffusion may be greatly enhanced, as compared to free thermal diffusion with, for a realistic experimental setup, an enhancement of up to 14 orders of magnitude.
06-07-2010
Física estadística
Statistical physics
(c) American Physical Society, 2001
Artículo
American Physical Society
         

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