Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Velocity of sound in relativistic heavy-ion collisions   We have studied the rapidity distribution of secondary hadrons produced in
nucleus-nucleus collisions at ultra-relativistic energies within the ambit of
the Landau's hydrodynamical model. A reasonable description of the data can
also be obtained by using the Bjorken's hydrodynamical model if the boost
invariance is restricted to a finite rapidity range. The sensitivity of the
hadronic spectra on the equation of state vis- a -vis the velocity of sound has
been discussed. The correlation between the velocity of sound and the
freeze-out temperature has been indicated. The effects of the non-zero widths
of various mesonic and baryonic degrees of freedom up to the mass value ~ 2.5
GeV is seen to be small.

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The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
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The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
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The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
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The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
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The categories of this paper are: chem-ph
3
The categories of this paper are: physics
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The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
18
The categories of this paper are: econ