Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Monopole solutions in SU(2)
  Yang-Mills-plus-massive-nonlinear-spinor-field theory   Monopole solutions in SU(2) Yang-Mills theory which includes spinor fields
described by the nonlinear Dirac equation are obtained. It is demonstrated that
the energy spectrum of such a system possesses a global minimum whose
appearance is brought about solely by the nonlinear spinor fields. It is shown
that the monopole solution obtained differs in principle from the
't~Hooft-Polyakov monopole in that it is topologically trivial.

29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom