Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Supersymmetric E_{8(+8)} / SO(16) Sigma-Model Coupled to N=1
  Supergravity in Three-Dimensions   A three-dimensional simple N=1 supergravity theory with a supersymmetric
sigma-model on the coset E_{8(+8)} / SO(16) is constructed. Both bosons and
fermions in the matter multiplets are in the spinorial 128-representation of
SO(16) with the same chirality. Due to their common chirality, this model can
not be obtained from the maximal N=16 supergravity. By introducing an
independent vector multiplet, we can also gauge an arbitrary subgroup of SO(16)
together with a Chern-Simons term. Similar N=1 supersymmetric sigma-models
coupled to supergravity are also constructed for the cosets F_{4(-20)} / SO(9)
and SO(8,n) / SO(8) X SO(n).

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The categories of this paper are: econ
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The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: atom-ph
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The categories of this paper are: supr-con
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: chem-ph
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The categories of this paper are: nlin
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The categories of this paper are: q-bio
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The categories of this paper are: cs
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int