Introduction to effective field theories. 1. Heisenberg-Euler effective theory, decoupling of heavy flavours

Abstract

This is the first part of lectures about effective field theories. Decoupling of heavy-particle loops is considered (heavy leptons in QED, heavy quarks in QCD).

Comments: Lectures at the Helmholtz International School-Workshop "Calculations for modern and future colliders", Dubna, July 10-20, 2009; 47 pages