Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Production and Elliptic Flow of Dileptons and Photons in the semi-Quark
  Gluon Plasma   We consider the thermal production of dileptons and photons at temperatures
above the critical temperature in QCD. We use a model where color excitations
are suppressed by a small value of the Polyakov loop, the semi Quark-Gluon
Plasma (QGP). Comparing the semi-QGP to the perturbative QGP, we find a mild
enhancement of thermal dileptons. In contrast, to leading logarithmic order in
weak coupling there are far fewer hard photons from the semi-QGP than the usual
QGP. To illustrate the possible effects on photon and dileptons production in
heavy ion collisions, we integrate the rate with a realistic hydrodynamic
simulation. Dileptons uniformly exhibit a small flow, but the strong
suppression of photons in the semi-QGP tends to bias the elliptical flow of
photons to that generated in the hadronic phase.

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The categories of this paper are: gr-qc
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
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The categories of this paper are: nlin
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The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: q-fin
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The categories of this paper are: physics
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The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: cond-mat