Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topological self-dual configurations in a Lorentz-violating gauged O(3)
  sigma model   We have studied the existence of topological Bogomol'nyi-Prasad-Sommerfield
or self-dual configurations in a Lorentz-violating gauged $O(3)$ nonlinear
sigma model, where $CPT$-even Lorentz-violating (LV) terms were introduced in
both the gauge and $\sigma $% -field sectors. As happens in the usual gauged
$\sigma $ model, purely magnetic self-dual configurations are allowed,
maintaining some qualitative features of the standard ones. In a more involved
configuration, Lorentz violation provides new self-dual magnetic solutions
carrying an electric field but a null total electric charge. In both cases, the
total energy of the self-dual configurations turns out to be proportional to
the topological charge of the model and to the LV parameters introduced in the
$% \sigma $ sector. It is shown that the LV terms yield magnetic flux reversion
as well.

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The categories of this paper are: funct-an
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The categories of this paper are: math-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
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The categories of this paper are: eess
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
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The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol