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Higher-order corrections to the equation-of-state of QED at high temperature

Authors
Journal
Nuclear Physics B
0550-3213
Publisher
Elsevier
Publication Date
Volume
434
Identifiers
DOI: 10.1016/0550-3213(94)00484-v
Keywords
  • Particle Physics
Disciplines
  • Chemistry
  • Physics

Abstract

Abstract We elaborate on the computation of the pressure of thermal quantum electrodynamics, with massless electrons, to the fifth ( e 5) order. The calculation is performed within the Feynman gauge and the imaginary-time formalism is employed. For the e 4 calculation, the method of Sudakov decomposition is used to evaluate some ultraviolet finite integrals which have a collinear singularity. For the e 5 contribution, we give an alternative derivation and extend the discussion to massive electrons and nonzero chemical potential. Comments are made on expected similarities and differences for prospective three-loop calculations in QCD.

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