Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The electrical conductivity and soft photon emissivity of the QCD plasma   The electrical conductivity in the hot phase of the QCD plasma is extracted
from a quenched lattice measurement of the Euclidean time vector correlator for
1.5 < T/T_c < 3. The spectral density in the vicinity of the origin is examined
using a method specially adapted to this region, and a peak at small energies
is seen. The continuum limit of the electrical conductivity, and the closely
related soft photon emissivity of the QCD plasma, are then extracted from a fit
to the Fourier transform of the temporal vector correlator.

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The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
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The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
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The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
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The categories of this paper are: q-fin
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The categories of this paper are: eess