Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Localization of a supersymmetric gauge theory in the presence of a
  surface defect   We use supersymmetric localization to compute the partition function of N=2
super-Yang-Mills on S^4 in the presence of a gauged linear sigma model surface
defect on a S^2 subspace. The result takes the form of a standard partition
function on S^4, with a modified instanton partition function and an additional
insertion corresponding to a shifted version of the gauged linear sigma model
partition function.

18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom