Dispersionless transport in a washboard potential
We study and characterize a new dynamical regime of underdamped particles in a tilted washboard potential. We find that for small friction in a finite range of forces the particles move essentially nondispersively, that is, coherently, over long intervals of time. The associated distribution of the...
| Authors: | , , , |
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| Format: | article |
| Publication Date: | 2007 |
| Country: | España |
| Institution: | Universitat Politècnica de Catalunya (UPC) |
| Repository: | UPCommons. Portal del coneixement obert de la UPC |
| Language: | English |
| OAI Identifier: | oai:upcommons.upc.edu:2117/2492 |
| Online Access: | https://hdl.handle.net/2117/2492 https://dx.doi.org/10.1103/PhysRevLett.98.020602 |
| Access Level: | Open access |
| Keyword: | Statistical Mechanics Condensed matter Diffusion Nonlinear systems Kramers problem Nonlinear dynamics Transport on surfaces Washboard potential Matèria condensada Difusió -- Models matemàtics Àrees temàtiques de la UPC::Física Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes numèrics |
| Summary: | We study and characterize a new dynamical regime of underdamped particles in a tilted washboard potential. We find that for small friction in a finite range of forces the particles move essentially nondispersively, that is, coherently, over long intervals of time. The associated distribution of the particle positions moves at an essentially constant velocity and is far from Gaussian-like. This new regime is complementary to, and entirely different from, well-known nonlinear response and large dispersion regimes observed for other values of the external force. |
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