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arXiv · hep-th/9305004

QED effective action at finite temperature and density

Per Elmfors·Bo-Sture Skagerstam·David Persson
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Abstract

The QED effective action at finite temperature and density is calculated to all orders in an external homogeneous and time-independent magnetic field in the weak coupling limit. The free energy, obtained explicitly, exhibit the expected de\ Haas -- van\ Alphen oscillations. An effective coupling at finite temperature and density is derived in a closed form and is compared with renormalization group results.

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Per Elmfors, Bo-Sture Skagerstam, David Persson. 1993-05-03. QED effective action at finite temperature and density. https://doi.org/10.1103/physrevlett.71.480

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