Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Planar Duality in $SU(2)$ WZW Models   We show how to generalize the $SU(2)$ WZW models to allow for open and
unoriented sectors. The construction exhibits some novel patterns of Chan-Paton
charge assignments and projected spectra that reflect the underlying current
algebra.

17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics