Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the infrared behavior of the shear spectral function in hot
  Yang-Mills theory   We revisit the determination of the two-loop spectral function in the shear
channel of hot Yang-Mills theory. Correcting a technical error in an earlier
computation and extending the result with a leading order Hard Thermal Loop
resummation is seen to improve the infrared behavior of the quantity
significantly. This makes it possible to straightforwardly use the result in
the corresponding imaginary time correlator and the shear sum rule.

18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat