Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: N=1/2 gauge theory and its instanton moduli space from open strings in
  R-R background   We derive the four dimensional N=1/2 super Yang-Mills theory from tree-level
computations in RNS open string theory with insertions of closed string
Ramond-Ramond vertices. We also study instanton configurations in this gauge
theory and their ADHM moduli space, using systems of D3 and D(-1) branes in a
R-R background.

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The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
3
The categories of this paper are: physics
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The categories of this paper are: mtrl-th
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The categories of this paper are: ao-sci
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
2
The categories of this paper are: math
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The categories of this paper are: eess