Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Galileon bounce after ekpyrotic contraction   We consider a simple cosmological model that includes a long ekpyrotic
contraction stage and smooth bounce after it. Ekpyrotic behavior is due to a
scalar field with a negative exponential potential, whereas the Galileon field
produces bounce. We give an analytical picture of how the bounce occurs within
the weak gravity regime, and then perform numerical analysis to extend our
results to a non-perturbative regime.

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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
2
The categories of this paper are: math
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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
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The categories of this paper are: quant-ph
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The categories of this paper are: solv-int
3
The categories of this paper are: physics
18
The categories of this paper are: econ
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The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph