The Effective Lagrangian of QED with a Magnetic Charge
V. G. Kovalevich, P. Osland, Ya. M. Shnir, E. A. Tolkachev
Abstract
The effective Lagrangian of QED coupled to dyons is calculated. The resulting generalization of the Euler-Heisenberg Lagrangian contains non-linear P- and T-nonivariant (but C invariant) terms corresponding to the virtual pair creation of dyons. As examples, the amplitudes for photon splitting and photon coalescence are calculated.
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