Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theoretical aspects of photon production in high energy nuclear
  collisions   A brief overview of the calculation of photon and dilepton production rates
in a deconfined quark-gluon plasma is presented. We review leading order rates
as well as recent NLO determinations and non-equilibrium corrections.
Furthermore, the difficulties in a non-perturbative lattice determination are
summarized.

27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con