Temporal and spatial persistence of combustion fronts

Details Temporal and spatial persistence of combustion fronts Temporal and spatial persistence of combustion fronts

2002-03-21

arxiv.org/abs/cond-mat/0203428v2

Phys. Rev. Lett. 90 (2) 024501 (2003)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.90.024501

The spatial and temporal persistence, or first-return distributions are measured for slow combustion fronts in paper. The stationary temporal and (perhaps less convincingly) spatial persistence exponents agree with the predictions based on the front dynamics, which asymptotically belongs to the Kardar-Parisi-Zhang (KPZ) universality class. The stationary short-range and the transient behavior of the fronts is non-Markovian and the observed persistence properties thus do not agree with the theory. This deviation is a consequence of additional time and length scales, related to the crossovers to the asymptotic coarse-grained behavior.

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