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Eur. Phys. J. Special Topics 165, 169-174 (2008)
DOI: 10.1140/epjst/e2008-00860-2
Superdiffusive wave front propagation in a chemical active flow
G. Fernández-García and V. Pérez-MuñuzuriGroup of Nonlinear Physics, Faculty of Physics, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
guillermo@fmares.usc.es
vicente.perez@cesga.es
Abstract
We present experiments on the propagation of a wave
front in a fluid forced by Faraday waves. The vertical periodical
modulation of the acceleration induces flows in the system that
modifies the Belousov-Zhabotinsky (BZ) chemical reaction dynamics.
Phase waves spreading through standing waves with different
symmetries results in superdiffusion. The anomalous diffusion is
characterized in terms of a non-integer transport exponent which
is compared with exponents resulting from tracer particles
trajectories undergoing rapid, distant jumps called Lévy
flights.
© EDP Sciences, Springer-Verlag 2008
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