Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Baryons from Quarks in the $1/N$ Expansion   We present a diagrammatic analysis of baryons in the $1/N$ expansion, where
$N$ is the number of QCD colors. We use this method to show that there are an
infinite number of degenerate baryon states in the large-$N$ limit. We also
show that forward matrix elements of quark bilinear operators satisfy the
static quark-model relations in this limit, and enumerate the corrections to
these relations to all orders in $1/N$. These results hold for any number of
light quark flavors, and the methods used can be extended to arbitrary
operators. Our results imply that for two flavors, the quark-model relations
for the axial currents and magnetic moments get corrections of order $1/N^2$.
For three or more flavors, the results are more complicated, and corrections
are generically of order $1/N$. We write an explicit effective lagrangian which
can be used to carry out chiral perturbation theory calculations in the $1/N$
expansion. Finally, we compare our results to what is expected from a chiral
constituent quark model.

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The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
2
The categories of this paper are: math