Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On moduli spaces of flat connections with non-simply connected structure
  group   We consider the moduli space of flat G-bundles over the twodimensional torus,
where G is a real, compact, simple Lie group which is not simply connected. We
show that the connected components that describe topologically non-trivial
bundles are isomorphic as symplectic spaces to moduli spaces of topologically
trivial bundles with a different structure group. Some physical applications of
this isomorphism which allows to trade topological non-triviality for a change
of the gauge group are sketched.

22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph