Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Supergravity in 10 + 2 Dimensions as Consistent Background for
  Superstring   We present a consistent theory of N=1 supergravity in twelve-dimensions with
the signature (10,2). Even though the formulation uses two null vectors
violating the manifest Lorentz covariance, all the superspace Bianchi
identities are satisfied. After a simple dimensional reduction to
ten-dimensions, this theory reproduces the N=1 supergravity in ten-dimensions,
supporting the consistency of the system. We also show that our supergravity
can be the consistent backgrounds for heterotic or type-I superstring in
Green-Schwarz formulation, by confirming the kappa-invariance of the total
action. This theory is supposed to be the purely N=1 supergravity sector for
the field theory limit of the recently predicted F-theory in twelve-dimensions.

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The categories of this paper are: cond-mat
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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
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The categories of this paper are: cs
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The categories of this paper are: nlin
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The categories of this paper are: chem-ph
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The categories of this paper are: supr-con
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ex
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The categories of this paper are: math-ph
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The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: alg-geom
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The categories of this paper are: q-bio