Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The QCD Running Coupling at Finite Temperature and Density   We present for the first time a self-contained calculation of the QCD running
coupling at finite temperature and quark chemical potential, alpha_s(T, mu),
based on a semiclassical background field method. The hard thermal/dense loop
results on the Debye screening mass are recovered in a first approximation. The
final result can be interpreted as the ordinary zero temperature running
coupling, with momenta replaced by in-medium scales Lambda: at high density and
zero temperature, the quark scale is set by Lambda ~ 24.4 mu. At high
temperature and moderate densities, the quark in-medium scale reads Lambda^2 ~
[2.91 T]^2 + [1.91 mu]^2, which resembles the naive phenomenological estimate
Lambda^2 = (pi T)^2 + mu^2.

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The categories of this paper are: atom-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: plasm-ph
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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: q-alg
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The categories of this paper are: hep-th
3
The categories of this paper are: physics
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The categories of this paper are: eess
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: stat
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The categories of this paper are: nucl-th
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The categories of this paper are: math
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The categories of this paper are: hep-lat