article · 16/07/2014
Velocity Anomaly of a Driven Tracer in a Confined Crowded Environment
Résumé
We consider a discrete model in which a tracer performs a random walk biased by an external force, in a dense bath of particles performing symmetric random walks constrained by hard-core interactions. We reveal the emergence of a striking velocity anomaly in confined geometries: in quasi-1D systems such as stripes or capillaries, the velocity of the tracer displays a long-lived plateau before ultimately dropping to a lower value. We develop an analytical solution that quantitatively accounts for this intriguing behavior. Our analysis suggests that such a velocity anomaly could be a generic feature of driven dynamics in quasi-1D crowded systems.
Citer cet article
Illien, P., Benichou, O., Oshanin, G., & Voituriez, R. (2014). Velocity Anomaly of a Driven Tracer in a Confined Crowded Environment. PHYSICAL REVIEW LETTERS, 113(3). https://doi.org/10.1103/PhysRevLett.113.030603@article{Illien2014_215,
author = {Illien, Pierre and Benichou, Olivier and Oshanin, Gleb and Voituriez, Raphael},
year = {2014},
month = {7},
title = {Velocity Anomaly of a Driven Tracer in a Confined Crowded Environment},
journal = {PHYSICAL REVIEW LETTERS},
volume = {113},
number = {3},
abstract = {We consider a discrete model in which a tracer performs a random walk biased by an external force, in a dense bath of particles performing symmetric random walks constrained by hard-core interactions. We reveal the emergence of a striking velocity anomaly in confined geometries: in quasi-1D systems such as stripes or capillaries, the velocity of the tracer displays a long-lived plateau before ultimately dropping to a lower value. We develop an analytical solution that quantitatively accounts for this intriguing behavior. Our analysis suggests that such a velocity anomaly could be a generic feature of driven dynamics in quasi-1D crowded systems.},
url = {http://www.dx.doi.org/10.1103/PhysRevLett.113.030603},
doi = {10.1103/PhysRevLett.113.030603},
issn = {0031-9007},
}TY - JOUR
AU - Illien, Pierre
AU - Benichou, Olivier
AU - Oshanin, Gleb
AU - Voituriez, Raphael
PY - 2014
DA - 2014/07/16
TI - Velocity Anomaly of a Driven Tracer in a Confined Crowded Environment
JO - PHYSICAL REVIEW LETTERS
VL - 113
IS - 3
SN - 0031-9007
AB - We consider a discrete model in which a tracer performs a random walk biased by an external force, in a dense bath of particles performing symmetric random walks constrained by hard-core interactions. We reveal the emergence of a striking velocity anomaly in confined geometries: in quasi-1D systems such as stripes or capillaries, the velocity of the tracer displays a long-lived plateau before ultimately dropping to a lower value. We develop an analytical solution that quantitatively accounts for this intriguing behavior. Our analysis suggests that such a velocity anomaly could be a generic feature of driven dynamics in quasi-1D crowded systems.
DO - 10.1103/PhysRevLett.113.030603
UR - http://www.dx.doi.org/10.1103/PhysRevLett.113.030603
ER -