Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Geometry of Sigma-Models with Twisted Supersymmetry   We investigate the relation between supersymmetry and geometry for two
dimensional sigma models with target spaces of arbitrary signature, and
Lorentzian or Euclidean world-sheets. In particular, we consider twisted forms
of the two-dimensional $(p,q)$ supersymmetry algebra. Superspace formulations
of the $(p,q)$ heterotic sigma-models with twisted or untwisted supersymmetry
are given. For the twisted (2,1) and the pseudo-K\"{a}hler sigma models, we
give extended superspace formulations.

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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: ao-sci
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga