Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Heterotic N=2 String with Space-Time Supersymmetry   We reconsider the issue of embedding space-time fermions into the
four-dimensional N=2 world-sheet supersymmetric string. A new heterotic theory
is constructed, taking the right-movers from the N=4 topological extension of
the conventional N=2 string but a c=0 conformal field theory supporting
target-space supersymmetry for the left-moving sector. The global bosonic
symmetry of the full formalism proves to be U(1,1), just as in the usual N=2
string. Quantization reveals a spectrum of only two physical states, one boson
and one fermion, which fall in a multiplet of (1,0) supersymmetry.

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The categories of this paper are: cmp-lg
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The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
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The categories of this paper are: funct-an
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn
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The categories of this paper are: chem-ph
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The categories of this paper are: q-fin
1
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: plasm-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: stat