Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmological perturbations from statistical thermal fluctuations   Cosmological perturbations due to statistical thermal fluctuations in a
single fluid characterized by an arbitrary equation of state are computed.
Formulas to predict the scalar and tensor perturbation spectra and
nongaussianity parameters at a given temperature are derived. These results are
relevant to any cosmological scenario where cosmic structures may have been
seeded thermally instead of originating purely from quantum vacuum
fluctuations.

24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th