Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hamiltonian reduction of the $U_{EM}(1)$ gauged three flavour WZW model   The three-flavour Wess-Zumino model coupled to electromagnetism is treated as
a constraint system using the Faddeev-Jackiw method. Expanding into series of
powers of the Goldstone boson fields and keeping terms up to second and third
order we obtain Coulomb-gauge hamiltonian densities.

1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin