Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Diffusion-approximation for a kinetic equation with perturbed velocity
  redistribution process   We derive the hydrodynamic limit of a kinetic equation with a stochastic,
short range perturbation of the velocity operator. Under some mixing hypotheses
on the stochastic perturbation, we establish a diffusion-approximation result:
the limit we obtain is a parabolic stochastic partial differential equation on
the macroscopic parameter, the density here.

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The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
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The categories of this paper are: q-fin
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph