Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Perturbative gravitational couplings and Siegel modular forms in
  $D=4,N=2$ string models   We consider four-parameter $D=4,N=2$ string models with Hodge numbers
$(4,214- 12n)$ and $(4,148)$, and we express their perturbative Wilsonian
gravitational coupling $F_1$ in terms of Siegel modular forms.

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The categories of this paper are: alg-geom
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The categories of this paper are: adap-org
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The categories of this paper are: mtrl-th
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The categories of this paper are: econ
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The categories of this paper are: quant-ph
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The categories of this paper are: q-bio
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The categories of this paper are: patt-sol
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas
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The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
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The categories of this paper are: stat
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The categories of this paper are: supr-con
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The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph