This book systematically describes several methods oc calculation of
the effects of strong electromagnetic fields in quantum processes,
using analytical solutions of the Dirac equation and Feynmann diagrams
at both the loop and tree levels. Such extreme conditions allow for
investigation of the role quantum processes play in astrophysical
objects and the early Universe. It will be useful for students of
theoretical physics and scientists with knowledge of QFT and the
Standard Model of Electroweak Interactions.