Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: QED Thermodynamics at Intermediate Coupling   We discuss reorganizing finite temperature perturbation theory using
hard-thermal-loop (HTL) perturbation theory in order to improve the convergence
of successive perturbative approximations to the free energy of a gauge theory.
We briefly review the history of the technique and present new results for the
three-loop HTL-improved approximation for the free energy of QED. We show that
the hard-thermal-loop perturbation reorganization improves the convergence of
the successive approximations to the QED free energy at intermediate coupling,
e ~ 2. The reorganization is gauge invariant by construction, and due to
cancellation among various contributions, one can obtain a completely analytic
result for the resummed thermodynamic potential at three loops.

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The categories of this paper are: adap-org
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
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The categories of this paper are: hep-th
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The categories of this paper are: supr-con
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The categories of this paper are: math
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The categories of this paper are: nucl-ex
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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: hep-lat
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys