Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Decoherence of Vacuum Fluctuations in Cosmology   A calculation of the one-mode occupation numbers for vacuum fluctuations of
massive fields in De Sitter space shows that their use for the generation of
classical density perturbations in inflationary cosmology very much depends on
their masses and conformal couplings. A new mechanism for the decoherence of
relatively massive fields has been identified. A similar analysis of the power
law inflation shows that production of adiabatic density perturbations may not
take place in models with power p < 3.

26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph