Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Saturation: Colour Glass Condensate and colour sources   In the recent years we have seen a lot of activity around systems and
experiments, like DIS at HERA or the heavy-ion experiments at RHIC, involving a
large number of partons due to the high enery and/or the high number of
participants of those experiments. The main problem in this regime is that of
the high parton densities. In fact, in most of the models of multiparticle
production, two contributions to the multiplicity are considered: one
proportional to the number of participant nucleons, $N_{part}$, and a second
one proportional to the number of collisions, $N_{part}^{4/3}$. In order to get
the right multiplicities at RHIC it is necessary to lower the second
contribution. A possible mechanism for this is the saturation. Here, I am going
to review the saturation of parton densities in the initial state, in two
different frameworks: the Colour Glass Condensate %(CGC) and the string
clustering.

27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg