Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multiple partonic interactions in heavy-ion collisions   I discuss the role played by multiple partonic interactions (MPI) in the
early stages of relativistic heavy-ion collisions, for which a weak-coupling
QCD description is possible. From the Color Glass Condensate, through the
Glasma and into the Quark-Gluon-Plasma phase, MPI are at the origin of
interesting novel QCD phenomena.

13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat