Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topological charge screening and the infrared behavior of the instanton
  density   A new mechanism for suppression of the instanton density in the infrared is
considered. This mechanism is based on the phenomenon of topological charge
screening, which leads to an effective cutoff in the contribution of large
instantons.

18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math