Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extended Gauge Symmetries in F-theory   We study gauge symmetry in F-theory in light of global aspects. For this, we
consider not only a simple (local) group, but also a semi-simple group with
Abelian factors. Once we specify the complete gauge group by decomposing the
discriminant, analogous to arranging 7-branes, we can derive the matter
contents, their localization and the relation to enhanced groups. Global
constraints coming from Calabi--Yau conditions and anomaly cancellations imply
a unified group. The semisiple group shows explicit formation of matter curves
and nontriviality of its embedding into exceptional group. Also the dual
heterotic string vacua with line bundles provide a guide on the unification.

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The categories of this paper are: patt-sol
1
The categories of this paper are: cs
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: math-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: eess
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The categories of this paper are: hep-ex
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The categories of this paper are: q-bio