Thermal effects and the effective action of quantum electrodynamics
- 15 September 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 46 (6) , 2689-2694
- https://doi.org/10.1103/physrevd.46.2689
Abstract
We study the influence of temperature on the nonlinear effective action of QED, in the presence of constant external fields, by means of the Fock-Schwinger proper time method. The analysis is done according to thermo field dynamics. This is an extension of the work done by Dittrich and we comment on the case of a constant electric field. In this way we find an effective thermal Euler-Heisenberg Lagrangian, identifying the effective thermal coupling constant and an effective thermal mass for the photon.Keywords
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