Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Introduction to the Quark-Gluon Plasma session in RJC 2014   This contribution is a brief introduction to the physics of Quark-Gluon
Plasma (QGP); the intention is to set the stage for the corresponding session
proceedings of the "Rencontre Jeunes Chercheurs 2014". The text consists in a
description of the Bjorken scenario of a heavy-ion collision followed by the
introduction of the notion of hard probe for QGP studies.

7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
18
The categories of this paper are: econ
2
The categories of this paper are: math