Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum magnetic collapse of a partially bosonized npe-gas: Implications
  for astrophysical jets   We study a possible mechanism for astrophysical jet production from a neutron
star composed by a partially bosonized npe-gas. We obtain that the expulsion of
a stable stream of matter might be triggered by the quantum magnetic collapse
of one or various components of the gas, while its collimation is due to the
formation of a strong self-generated magnetic field.

10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex