Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The R-axion and non-Gaussianity   We study cosmological implications of an R-axion, a pseudo Nambu-Goldstone
boson associated with spontaneous breaking of an U(1)_R symmetry, focusing on
its quantum fluctuations generated during inflation. We show that, in the
anomaly mediation, the R-axion decays into a pair of gravitinos, which
eventually decay into the visible particles producing the neutralino LSP. As a
result, the quantum fluctuations of the R-axion are inherited by the cold dark
matter isocurvature density perturbation with potentially large
non-Gaussianity. The constraints on the inflation scale and the initial
misalignment are derived.

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The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-alg
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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: supr-con
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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
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The categories of this paper are: physics
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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: plasm-ph
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The categories of this paper are: eess
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The categories of this paper are: cs