Dresden 2006 – scientific programme
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AKB: Biologische Physik
AKB 40: Poster Session II
AKB 40.6: Poster
Wednesday, March 29, 2006, 16:30–19:30, P3
Competition of Diffusion and Driven Motion in Lattice Gases — •Hauke Hinsch1, Paolo Pierobon1,2, and Erwin Frey1 — 1Arnold Sommerfeld Center and CeNS, Department of Physics, LMU München, Germany — 2Hahn-Meitner-Institut, Abteilung Theorie, Berlin, Germany
Driven and diffusive lattice gases have proved useful as model systems for a variety of biological transport processes like ribosomal mRNA transcription or the motion of molecular motors along microtubules. Furthermore, they have attracted interest as a paradigm of non-equilibrium systems in statistical physics which exhibit a surprisingly rich phase behavior. Recently, the total asymmetric exclusion process (TASEP) has been extended by equilibrium bulk ad- and desorption dynamics resulting in interesting competitive effects (Parmeggiani, PRL 90, 2003). We study the competition of driven and diffusive motion on two one-dimensional lattices. An investigation with mean-field theory and Monte Carlo techniques reveals novel behavior and limitations of mean-field theory.