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hep-ph1999
Applications of the Light Cone Condition for various perturbed Vacua
Walter Dittrich, Holger Gies
We examine the propagation of light in the presence of various modifications of the QED vacuum in the limit of low frequency. A polarization summed and direction averaged-light con…
hep-ph1998
Vacuum Birefringence in Strong Magnetic Fields
Walter Dittrich, Holger Gies
Table of Contents 1. One-loop effective Lagrangian in spinor QED. 2. Dispersion effects for low-frequency photons. 3. Vacuum birefringence in magnetic fields. 4. Light cone conditi…