Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-Gaussian Spikes from Chaotic Billiards in Inflation Preheating   A new class of non-Gaussian curvature fluctuations \zeta_{pr} (\bx) \equiv
\delta N(\chi_i) arises from the post-inflation preheating behaviour of a
non-inflaton field \chi_i. Its billiard-like chaotic dynamics imprints regular
log-spaced narrow spikes in the number of preheating e-folds N(\chi_i). We
perform highly accurate lattice simulations of SUSY-inspired quartic inflaton
and coupling potentials in a separate-universe approximation to compute
N(\chi_i) as a function of the (nearly homogeneous) initial condition \chi_i.
The super-horizon modes of \chi_i(\bx) result in positive spiky excursions in
\zeta_{pr} and hence negative gravitational potential fluctuations added to the
usual sign-independent inflaton-induced perturbations, observably manifested in
large cosmic structures and as (polarized) temperature CMB cold spots.

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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
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The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
2
The categories of this paper are: math
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The categories of this paper are: bayes-an