Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Particle-like solutions to higher order curvature Einstein--Yang-Mills
  systems in d dimensions   We consider the superposition of the first two members of the gravitational
hierarchy (Einstein plus first Gauss-Bonnet(GB)) interacting with the
superposition of the first two members of the $SO_{(\pm)}(d)$ Yang--Mills
hierarchy, in $d$ dimensions. Such systems can occur in the low energy
effective action of string theory. Particle-like solutions %for the systems
with only an Einstein term, and with only a GB term, in dimensions $d=6,8$ are
constructed respectively. Our results reveal qualitatively new properties
featuring double-valued solutions with critical behaviour. In this preliminary
study, we have restricted ourselves to one-node solutions.

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The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
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The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: cmp-lg
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The categories of this paper are: econ
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The categories of this paper are: alg-geom
1
The categories of this paper are: cs