Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Moments of 2D Parabolic Anderson Model   In this note, we use the Feynman-Kac formula to derive a moment
representation for the 2D parabolic Anderson model in small time, which is
related to the intersection local time of planar Brownian motions.

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The categories of this paper are: hep-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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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: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: quant-ph
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The categories of this paper are: q-alg
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: q-bio
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The categories of this paper are: chem-ph