Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Massive Supermultiplets in Four-Dimensional Superstring Theory   We extend the discussion of arXiv:1007.5254 on massive Regge excitations on
the first mass level of four-dimensional superstring theory. For the lightest
massive modes of the open string sector, universal supermultiplets common to
all four-dimensional compactifications with N = 1, 2 and N = 4 spacetime
supersymmetry are constructed respectively -- both their vertex operators and
their supersymmetry variations. Massive spinor helicity methods shed light on
the interplay between individual polarization states.

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The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: astro-ph
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The categories of this paper are: math-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
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The categories of this paper are: stat
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The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int
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The categories of this paper are: patt-sol