Phys. Rev. D 65, 025014 (2001) [8 pages]Thermal effects in low-temperature QEDReceived 15 August 2001; published 26 December 2001 QED is studied at low temperature (T≪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≫1/T. As applications, we reproduce the ring-improved free energy and calculate the Debye mass to order e5. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.65.025014
DOI:
10.1103/PhysRevD.65.025014
PACS:
12.20.Ds, 11.10.Wx
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