Speaker
Prof.
Biruniy Fayzullaev
(National University of Uzbekistan)
Description
The equations for the QED effective action derived in [3] are considered using
singular perturbation theory. The effective action is divided into regular and singular
(in coupling constant) parts. It is shown that expression for the regular part coincides
with usual Feynman perturbation series over coupling constant, while the remainder
has essential singularity at the vanishing coupling constant: e → 0. This means that
in the frame of quantum field theory it is impossible ”to switch off” electromagnetic
interaction in general and pass on to ”free electron”.
Primary author
Prof.
Biruniy Fayzullaev
(National University of Uzbekistan)
