Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Classical chromo-dynamics of relativistic heavy ion collisions   Relativistic heavy ion collisions produce thousands of particles, and it is
sometimes difficult to believe that these processes allow for a theoretical
description directly in terms of the underlying theory - QCD. However once the
parton densities are sufficiently large, an essential simplification occurs -
the dynamics becomes semi-classical. As a result, a simple ab initio approach
to the nucleus--nucleus collision dynamics may be justified. In these lectures,
we describe the application of these ideas to the description of
multi--particle production in relativistic heavy ion collisions. We also
discuss the role of semi-classical fields in the QCD vacuum in hadron
interactions at low and high energies.

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The categories of this paper are: acc-phys
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The categories of this paper are: physics
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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: ao-sci
1
The categories of this paper are: cs
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: q-fin