Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraining the D3-brane effective action   We consider higher derivative corrections of the type D^{2k} R^2 in the
effective action of the D3-brane with trivial normal bundle. Based on the
perturbative disc and annulus amplitudes, and constraints of supersymmetry and
duality, we argue that these interactions are protected, at least for small
values of k. Their coefficient functions receive only a finite number of
perturbative contributions, and non-perturbative contributions from
D-instantons. We propose expressions for these modular forms for low values of
k.

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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: math
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: nlin
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The categories of this paper are: patt-sol
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The categories of this paper are: supr-con
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The categories of this paper are: atom-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-lat
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The categories of this paper are: plasm-ph