Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Viscous modifications to quark and gluon distribution functions in
  quark-gluon plasma medium   Viscous modifications to the thermal distributions of quark-antiquarks and
gluons have been studied in a quasi-particle description of the
quark-gluon-plasma medium created in relativistic heavy ion collision
experiments. The model is described in terms of quasi-partons that encode the
hot QCD medium effects in their respective effective fugacities. Both shear and
bulk viscosities have been taken in to account in the analysis and the
modifications to thermal distributions have been obtained by modifying the the
energy momentum tensor in view of the non-trivial dispersion relations for the
gluons and quarks. As an implication, dilepton production rate in the $q
\bar{q}$ annihilation process has been investigated. Significant modifications
have been observed in the dilepton production rate in the presence of
interactions encoded in the QCD equation of state.

7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga