Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chromomagnetic Catalysis of Chiral Symmetry Breaking and Color
  Superconductivity   It is shown in the framework of an extended NJL model with two flavors that
some types of external chromomagnetic field induce the dynamical chiral or
color symmetry breaking even at weakest attraction between quarks. It is argued
also that an external chromomagnetic field, simulating the chromomagnetic gluon
condensate of the real QCD-vacuum, might significantly influence the color
superconductivity formation.

31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ