Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nflation: non-gaussianity in the horizon-crossing approximation   We analyze the cosmic non-gaussianity produced in inflation models with
multiple uncoupled fields with monomial potentials, such as Nflation. Using the
horizon-crossing approximation to compute the non-gaussianity, we show that
when each field has the same form of potential, the prediction is independent
the number of fields, their initial conditions, and the spectrum of
masses/couplings. It depends only on the number of e-foldings after the horizon
crossing of observable perturbations. We also provide a further generalization
to the case where the fields can have monomial potentials with different
powers. Unless the horizon-crossing approximation is substantially violated,
the predicted non-gaussianity is too small to ever be observed.

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The categories of this paper are: cond-mat
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The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
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The categories of this paper are: cs
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The categories of this paper are: hep-lat
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The categories of this paper are: nlin
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The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: math-ph
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The categories of this paper are: math
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The categories of this paper are: hep-ph