Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The reconstructed Big Bang from RHIC data   The final state of $Au + Au$ collisions at sqrt{s}=130 AGeV at RHIC has been
reconstructed within the framework of the Buda-Lund hydro model, by performing
a simultaneous fit to preliminary PHENIX and STAR data on two-particle
Bose-Einstein correlations and identified single particle spectra. The Hubble
constant of the expanding final state of this heavy ion collision is determined
to be H = <u_t> = 0.77 +- 0.09.

1
The categories of this paper are: cs
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: nucl-th
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The categories of this paper are: math
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org