Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-Gaussian Formation of Primordial Black Holes: Effects on the
  Threshold   Primordial black holes could have been formed in the early universe from
sufficiently large cosmological perturbations re-entering the horizon when the
Universe is still radiation dominated. These originate from the spectrum of
curvature perturbations generated during inflation at small-scales. Because of
the non-linear relation between the curvature perturbation $\zeta$ and the
overdensity $\delta\rho$, the formation of the primordial black holes is
affected by intrinsic non-Gaussianity even though the curvature perturbation is
Gaussian. We investigate the impact of this non-Gaussianity on the critical
threshold $\delta_c$ which measures the excess of mass of the perturbation,
finding a relative change with respect to the value obtained using a linear
relation between $\zeta$ and $\delta\rho$, of a few percent. This shows that
the value of the critical threshold is rather robust against non-linearities.
The same holds also when cosmologically interesting values of local primordial
non-Gaussianity are added to the curvature perturbation.

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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
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The categories of this paper are: q-bio
1
The categories of this paper are: cs
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
18
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: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph