Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Orientifold Planar Equivalence: The Quenched Meson Spectrum   A numerical study of Orientifold Planar Equivalence is performed in SU(N)
Yang-Mills theories for N=2,3,4,6. Quenched meson masses are extracted in the
antisymmetric, symmetric and adjoint representations for the pseudoscalar and
vector channels. An extrapolation of the vector mass as a function of the
pseudoscalar mass to the large-N limit shows that the numerical results agree
within errors for the three theories, as predicted by Orientifold Planar
Equivalence. As a byproduct of the extrapolation, the size of the corrections
up to O(1/N^3) are evaluated. A crucial prerequisite for the extrapolation is
the determination of an analytical relationship between the corrections in the
symmetric and in the antisymmetric representations, order by order in a 1/N
expansion.

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The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-th
2
The categories of this paper are: math
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The categories of this paper are: acc-phys
3
The categories of this paper are: physics
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The categories of this paper are: plasm-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: gr-qc
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The categories of this paper are: cmp-lg
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn