Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonabelian Global Chiral Symmetry Realisation in the Two-Dimensional N
  Flavour Massless Schwinger Model   The nonabelian global chiral symmetries of the two-dimensional N flavour
massless Schwinger model are realised through bosonisation and a vertex
operator construction.

21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat