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Thermal Effects in Low-Temperature QED

Jens O. Andersen
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Abstract

QED is studied at low temperature ($T\ll m$, where $m$ is the electron mass) and zero chemical potential. By integrating out the electron field and the nonzero bosonic Matsubara modes, we construct an effective three-dimensional field theory that is valid at distances $R\gg1/T$. As applications, we reproduce the ring-improved free energy and calculate the Debye mass to order $e^5$.

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Jens O. Andersen. 2001-10-17. Thermal Effects in Low-Temperature QED. https://doi.org/10.1103/physrevd.65.025014

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