Anomalous aging phenomena caused by drift velocities

Details Anomalous aging phenomena caused by drift velocities Anomalous aging phenomena caused by drift velocities

2000-08-28

arxiv.org/abs/cond-mat/0008400v2

Europhys. Lett. 54, 573-579 (2001)

Physics

Condensed Matter

Statistical Mechanics

7 pages, 3 figures. To appear in Europhysics Letters

Scientific paper

10.1209/epl/i2001-00332-7

We demonstrate via several examples that a uniform drift velocity gives rise to anomalous aging, characterized by a specific form for the two-time correlation functions, in a variety of statistical-mechanical systems far from equilibrium. Our first example concerns the oscillatory phase observed recently in a model of competitive learning. Further examples, where the proposed theory is exact, include the voter model and the Ohta-Jasnow-Kawasaki theory for domain growth in any dimension, and a theory for the smoothing of sandpile surfaces.

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