Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dyonic black holes in nonlinear electrodynamic from Kaluza-Klein theory
  with a Gauss-Bonnet term   Five-dimensional Kaluza-Klein theory with an Einstein-Gauss-Bonnet Lagrangian
induces nonlinear corrections to the four-dimensional Maxwell equations, which
however remain second order. Although these corrections do not have effect on
the purely electric or magnetic monopole solutions for pointlike charges, they
affect the dyonic solutions, smoothing the electric field at the origin for
negative values of the Gauss-Bonnet coupling constant. We investigate these
solutions in flat space, and then extend them in the presence of gravity,
obtaining charged black hole solutions that generalize the Reissner-Nordstr\"om
metric.

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The categories of this paper are: comp-gas
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The categories of this paper are: chao-dyn
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The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
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The categories of this paper are: eess
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: nlin
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph