Induced Lorentz and PCT Symmetry Breaking in an External Electromagnetic Field
M. B. Hott, J. L. Tomazelli
Abstract
In this work we derive the Lorentz-PCT-violating effective action for a fermion in a constant and uniform electromagnetic field using the Fock-Schwinger proper time method and extract the exact value of the coefficient of the nonperturbatively induced Chern-Simons term.
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