Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Eta' Mass and Chiral Symmetry Breaking at Large Nc and Nf   We propose a method for implementing the large-Nc, large-Nf limit of QCD at
the effective Lagrangian level. Depending on the value of the ratio Nf/Nc,
different patterns of chiral symmetry breaking can arise, leading in particular
to different behaviors of the eta-prime mass in the combined large-N limit.

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The categories of this paper are: cmp-lg
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The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an
2
The categories of this paper are: math
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The categories of this paper are: dg-ga
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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: q-fin
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The categories of this paper are: nucl-th
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The categories of this paper are: funct-an
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The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph