Vacuum polarization with account of contribution of quarks interacting with interfering electromagnetic and non-Ahelian background gauge fields in an SU(3) model of quantum chromodynamics has been considered. An effective Lagrangian, which is the generalization of the Heisenberg-Euler Lagrangian of quantum electrodynamics and exactly considering the contributions of the fields Hand B for the case of a magnetic field H interfering with a chromomagnetic field B has been calculated in a one-loop approximation.
Department of Theoretical Physics, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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