Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2007-08-20
J. Stat. Mech (2007) P10002
Physics
Condensed Matter
Statistical Mechanics
14 pages, 6 figures
Scientific paper
10.1088/1742-5468/2007/10/P10002
In this work, the out-of-equilibrium dynamics of the Kardar-Parisi-Zhang equation in (1+1) dimensions is studied by means of numerical simulations, focussing on the two-times evolution of an interface in the absence of any disordered environment. This work shows that even in this simple case, a rich aging behavior develops. A multiplicative aging scenario for the two-times roughness of the system is observed, characterized by the same growth exponent as in the stationary regime. The analysis permits the identification of the relevant growing correlation length, accounting for the important scaling variables in the system. The distribution function of the two-times roughness is also computed and described in terms of a generalized scaling relation. These results give good insight into the glassy dynamics of the important case of a non-linear elastic line in a disordered medium.
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