Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Heterotic Reduction of Courant Algebroid Connections and
  Einstein-Hilbert Actions   We discuss Levi-Civita connections on Courant algebroids. We define an
appropriate generalization of the curvature tensor and compute the
corresponding scalar curvatures in the exact and heterotic case, leading to
generalized (bosonic) Einstein-Hilbert type of actions known from supergravity.
In particular, we carefully analyze the process of the reduction for the
generalized metric, connection, curvature tensor and the scalar curvature.

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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
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The categories of this paper are: funct-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-bio
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The categories of this paper are: stat
1
The categories of this paper are: cs
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
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The categories of this paper are: econ
3
The categories of this paper are: physics