Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the use of normal forms in the propagation of random waves   We consider the evolution of the correlations between the Fourier coeficients
of a solution of the Kamdostev-Petviavshvili II equation when these
coefficients are initially independent random variables. We use the structure
of normal forms of the equation to prove that those correlations remain small
until times of order $\varepsilon^{-5/3}$ or $\varepsilon^{-2}$ depending on
the quantity considered.

4
The categories of this paper are: cond-mat
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The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
3
The categories of this paper are: physics
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The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg