Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: What Hath RHIC Wrought ? : The Chiral Restoration Phase Transition Found
  at RHIC   Given Brown/Rho scaling we thought of the mesons which are observed in
Nambu-Jona Lasinio theory as collective modes. The pi, sigma, rho and A_1,
should go smoothly through T_c as the temperature rose, going massless as T
comes to T_c.

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The categories of this paper are: nucl-th
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The categories of this paper are: dg-ga
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
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The categories of this paper are: cond-mat
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: stat
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The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: eess
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The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org