Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dimensional reductions of M-theory S-branes to string theory S-branes   We study both the direct and the double dimensional reduction of space-like
branes of M-theory and point out some peculiarities in the process unlike their
time-like counterpart. In particular, we show how starting from SM2 and
SM5-brane solutions we can obtain SD2 and SNS5-brane as well as SNS1 and
SD4-brane solutions of string theory by direct and double dimensional
reductions respectively. In the former case we need to use delocalized SM-brane
solutions, whereas in the latter case we need to use anisotropic SM-brane
solutions in the directions which are compactified.

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The categories of this paper are: cond-mat
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The categories of this paper are: stat
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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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: nlin
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The categories of this paper are: hep-ph
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The categories of this paper are: eess
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The categories of this paper are: comp-gas
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The categories of this paper are: cmp-lg
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The categories of this paper are: econ
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The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci