Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/2481
Title: Diffusion in tilted periodic potentials: Enhancement, universality, and scaling
Authors: REIMANN, Peter
VAN DEN BROECK, Christian 
Linke, H
Hanggi, P
Rubi, JM
Perez-Madrid, A
Issue Date: 2002
Publisher: AMERICAN PHYSICAL SOC
Source: PHYSICAL REVIEW E, 65(3)
Abstract: An exact analytical expression for the effective diffusion coefficient of an overdamped Brownian particle in a tilted periodic potential is derived for arbitrary potentials and arbitrary strengths of the thermal noise. Near the critical tilt (threshold of deterministic running solutions! a scaling behavior for weak thermal noise is revealed and various universality classes are identified. In comparison with the bare (potential-free) thermal diffusion, the effective diffusion coefficient in a critically tilted periodic potential may be, in principle, arbitrarily enhanced. For a realistic experimental setup, an enhancement by 14 orders of magnitude is predicted so that thermal diffusion should be observable on a macroscopic scale at room temperature.
Notes: Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany. Limburgs Univ Ctr, B-3590 Diepenbeek, Belgium. Univ Oregon, Dept Phys, Eugene, OR 97403 USA. Univ Barcelona, Fac Fis, Dept Fis Fonamental, E-08028 Barcelona, Spain.Reimann, P, Univ Augsburg, Inst Phys, Univ Str 1, D-86135 Augsburg, Germany.
Document URI: http://hdl.handle.net/1942/2481
ISSN: 1063-651X
DOI: 10.1103/PhysRevE.65.031104
ISI #: 000174548800014
Category: A1
Type: Journal Contribution
Validations: ecoom 2003
Appears in Collections:Research publications

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