Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electrical conductivity of quark matter at finite T   In this talk, I present the recent theoretical results on the electrical
conductivity (EC) sigma of quark matter, using the Kubo formula at finite
temperature and zero quark density (T>0, mu=0) in the presence of an external
strong magnetic field. The dilute instanton-liquid model with the caloron
distribution is taken into account. It turns out that sigma=(0.02~0.15)/fm for
T=(0~400) MeV with the relaxation time tau=(0.3~0.9) fm. EC is parameterized as
sigma/T (0.46,0.77,1.08,1.39)C_EM for tau=(0.3,0.5,0.7,0.9) fm, respectively.
These results are well compatible with other theoretical estimations and show
almost negligible effects from the magnetic field. The soft photon emission
rate from the quark-gluon plasma is discussed as well.

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The categories of this paper are: math
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
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The categories of this paper are: physics
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph