Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Yang-Mills theory, 2+1 and 3+1 dimensions   I review the analysis of (2+1)-dimensional Yang-Mills ($YM_{2+1})$ theory via
the use of gauge-invariant matrix variables. The vacuum wavefunction, string
tension, the propagator mass for gluons, its relation to the magnetic mass for
$YM_{3+1}$ at nonzero temperature and the extension of our analysis to the
Yang-Mills-Chern-Simons theory are discussed. A possible extension to 3+1
dimensions is also briefly considered.

21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th