Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sasaki-Einstein Metrics on S^2 x S^3   We present a countably infinite number of new explicit co-homogeneity one
Sasaki-Einstein metrics on S^2 x S^3, in both the quasi-regular and irregular
classes. These give rise to new solutions of type IIB supergravity which are
expected to be dual to N=1 superconformal field theories in four-dimensions
with compact or non-compact R-symmetry and rational or irrational central
charges, respectively.

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The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
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The categories of this paper are: stat
12
The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: cmp-lg
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The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an