Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Knotty inflation and the dimensionality of spacetime   We suggest a structure for the vacuum comprised of a network of tightly
knotted/linked flux tubes formed in a QCD-like cosmological phase transition
and show that such a network can drive cosmological inflation. As the network
can be topologically stable only in three space dimensions, this scenario
provides a dynamical explanation for the existence of exactly three large
spatial dimensions in our Universe.

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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
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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: solv-int
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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: adap-org
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg