Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: One-Loop Quadratic Divergences of the Dual Non-Linear Sigma Model in
  Four-Dimensional Spacetime   Following a review of the dual description of the non-linear sigma model we
investigate the one-loop quadratic divergences. We use the covariant background
field method for the general case and apply the results to the important
example of $SU(2)$.

30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics