Download or read book An Informal Introduction to Gauge Field Theories written by Ian J. R. Aitchison and published by Cambridge University Press. This book was released on 2007-09-27 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four forces are dominant in physics: gravity, electromagnetism and the weak and strong nuclear forces. Quantum electrodynamics - the highly successful theory of the electromagnetic interaction - is a gauge field theory. In this short book Dr Aitchison gives an introduction to these theories, a knowledge of which is essential in understanding modern particle physics.