Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Group-Theoretic Evidence for SO(10) Grand Unification   The hypercharges of the fermions are not uniquely determined in SO(10) grand
unification, but rather depend upon which linear combination of the two U(1)
subgroups of SO(10) > SU(3) X SU(2) X U(1) X U(1) remains unbroken. We show
that, in general, a given hypercharge assignment can be obtained only with very
high-dimensional Higgs representations. The observation that the standard model
is obtained with low-dimensional Higgs representations can therefore be
regarded as further evidence for SO(10) grand unification. This evidence is
independent of the fact that SO(10) > SU(5).

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The categories of this paper are: chao-dyn
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The categories of this paper are: stat
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The categories of this paper are: hep-th
3
The categories of this paper are: physics
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The categories of this paper are: alg-geom
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
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The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph