Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Classical solutions from quantum regime for barotropic FRW model   The quantization of gravity coupled to barotropic perfect fluid as matter
field and cosmological constant is made and the wave function can be determined
for any $\kappa$ in the FRW minisuperspace model. The meaning of the existence
of the classical solution is discussed in the WKB semiclassical approximation

17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph