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Dispersionless transport in a washboard potential Lindenberg, Katja Sancho, José M. Lacasta Palacio, Ana María Sokolov, Igor M., 1958- Termodinàmica Dinàmica molecular Thermodynamics Molecular dynamics 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. 2010-06-11T10:49:06Z 2010-06-11T10:49:06Z 2007 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 0031-9007 https://hdl.handle.net/2445/12845 550801 eng Reproducció digital del document proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevLett.98.020602 Physical Review Letters, 2007, vol. 98, núm. 2, p. 020602-1-020602-4 http://dx.doi.org/10.1103/PhysRevLett.98.020602 (c) American Physical Society, 2007 info:eu-repo/semantics/openAccess 4 p. application/pdf American Physical Society Articles publicats en revistes (Física Quàntica i Astrofísica)