Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Classical chromodynamics and heavy ion collisions   This paper is a slightly modified version of the introductory part of a
doctoral dissertation also containing the articles hep-ph/0303076,
hep-ph/0409328 and hep-ph/0409058. The paper focuses on the calculation of
particle production in a relativistic heavy ion collision using the
McLerran-Venugopalan model. The main part of the paper summarizes the
background of these numerical calculations. First we relate this calculation of
the initial stage af a heavy ion collision to our understanding of the whole
collision process. Then we discuss the saturation physics of the small x
wavefunction of a hadron or a nucleus. The classical field model of Kovner,
McLerran and Weigert is then introduced before moving to discuss the numerical
algorithms used to compute gluon and quark pair production in this model.
Finally we shortly review the results on gluon and quark-antiquark production
obtained in the three articles mentioned above.

30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math