Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The FKPP wave front as a sensor of perturbed diffusion in concentrated
  systems   The sensitivity to perturbations of the Fisher and Kolmogorov, Petrovskii,
Piskunov front is used to find a quantity revealing perturbations of diffusion
in a concentrated solution of two chemical species with different
diffusivities. The deterministic dynamics includes cross-diffusion terms due to
the deviation from the dilution limit. The behaviors of the front speed, the
shift between the concentration profiles of the two species, and the width of
the reactive zone are investigated, both analytically and numerically. The
shift between the two profiles turns out to be a well-adapted criterion
presenting noticeable variations with the deviation from the dilution limit in
a wide range of parameter values.

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The categories of this paper are: quant-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
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The categories of this paper are: eess
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: cond-mat
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The categories of this paper are: physics
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The categories of this paper are: q-fin
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The categories of this paper are: mtrl-th