Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Natural inflation in 5D warped backgrounds   In light of the five-year data from the Wilkinson Microwave Anisotropy Probe
(WMAP), we discuss models of inflation based on the pseudo Nambu-Goldstone
potential predicted in five-dimensional gauge theories for different
backgrounds: flat Minkowski, anti-de Sitter, and dilatonic spacetime. In this
framework, the inflaton potential is naturally flat due to shift symmetries and
the mass scales associated with it are related to 5D geometrical quantities.

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The categories of this paper are: q-fin
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The categories of this paper are: eess
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int
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The categories of this paper are: econ
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: alg-geom
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
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The categories of this paper are: chem-ph