Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Brane webs and $O5$-planes   We explore the properties of five-dimensional supersymmetric gauge theories
living on $5$-brane webs in orientifold $5$-plane backgrounds. This allows
constructing quiver gauge theories with alternating $USp(2N)$ and $SO(N)$ gauge
groups with fundamental matter, and thus leads to the existence of new $5d$
fixed point theories. The web description can be further used to study
non-perturbative phenomena such as enhancement of symmetry and duality. We
further suggest that one can use these systems to engineer $5d$ $SO$ group with
spinor matter. We present evidence for this claim.

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The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex