Dynamics of Shock Probes in Driven Diffusive Systems

Details Dynamics of Shock Probes in Driven Diffusive Systems Dynamics of Shock Probes in Driven Diffusive Systems

2006-11-27

arxiv.org/abs/cond-mat/0611675v2

J. Stat. Mech. (2007) L01004

Physics

Condensed Matter

Statistical Mechanics

Accepted in Journal of Statistical Mechanics: Theory and Experiment

Scientific paper

10.1088/1742-5468/2007/01/L01004

We study the dynamics of shock-tracking probe particles in driven diffusive systems and also in equilibrium systems. In a driven system, they induce a diverging timescale that marks the crossover between a passive scalar regime at early times and a diffusive regime at late times; a scaling form characterises this crossover. Introduction of probes into an equilibrium system gives rise to a system-wide density gradient, and the presence of even a single probe can be felt across the entire system.

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