Igor A. Shovkovy
Published 1999-02-02Version 1
The one-loop effective action in QED at zero and finite temperature is obtained by using the worldline approach. The Feynman rules for the perturbative expansion of the action in the number of derivatives are derived. The general structure of the temperature dependent part of the effective action in an arbitrary external inhomogeneous magnetic field is established. The two-derivative term in the effective action for spinor and scalar QED in a static magnetic background at $T\neq 0$ is calculated.
Comments: 8 pages, 2 postscript figures, uses icmp.sty (included). The presentation at the Conference "Trends in Mathematical Physics", 14-17 October 1998, University of Tennessee, Knoxville
Journal: AMS/IP Stud.Adv.Math.13:467-474,1999
Derivative Expansion of the Effective Action for QED in 2+1 and 3+1 dimensions
Covariant technique of derivative expansion of one-loop effective action
One-Loop Effective Action for Euclidean Maxwell Theory on Manifolds with Boundary
