Hamburg 2001 – wissenschaftliches Programm
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SYNT: Neue Transportphänomene - Vom Maxwell-Dämon zum Verkehrsstau
SYNT 0: Neue Transportph
änomene – Vom Maxwell-D
ämon zum Verkehrsstau
SYNT 0.3: Vortrag
Dienstag, 27. März 2001, 15:15–15:30, S 7
Rectification of current in ac-driven nonlinear systems and symmetry properties of the Boltzmann equation — •Oleg Yevtushenko1,2, Sergej Flach1, Yaroslav Zolotaryuk1, and Alexandr Ovchinikov1,3 — 1Max–Planck–Institut für Physik komplexer Systeme, Nöthnitzer Str. 38, D-01187, Dresden — 2The Abdus Salam ICTP, Strada Costiera 11, 34100 Trieste, Italy — 3Institute for Chemical Physics of Russian Academy of Sciences, 117977, Moscow, Russia
We study rectification of a current of particles moving in a spatially periodic potential under the influence of time- periodic forces with zero mean value. If certain time-space symmetries are broken a non-zero directed current of particles is possible. We investigate this phenomenon in the framework of the kinetic Boltzmann equation. We find that the attractor of the Boltzmann equation completely reflects the symmetries of the original one-particle equation of motion. Especially, we analyse the limits of weak and strong relaxation.