Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Van-der-Waals Gas EOS for the Lorentz Contracted Spheres   The relativistic equation of state (EOS) of the Van-der-Waals gas is
suggested and analyzed. In contrast to the usual case, the Lorentz contraction
of the sphere's volume is taken into account. It is proven that the suggested
EOS obeys the causality in the limit of high densities, i.e., the value of
sound velocity of such a media is subluminar. The pressure obtained for the
high values of chemical potential has an interesting kinetic interpretation.
The suggested EOS shows that for high densities the most probable configuration
corresponds to the smallest value of the relativistic excluded volume. In other
words, for high densities the configurations with the collinear velocities of
the neighboring hard core particles are the most probable ones. This, perhaps,
may shed light on the coalescence process of any relativistic hard core
constituents.

21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
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The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th