ABSTRACT
In this textbook we have surveyed the most important ideas of quantum field theory. Working from the basic concepts that come from fusing relativity, quantum mechanics, and fields, we have built an elaborate structure, which includes such remarkable elements as coupling constant renormalization and non-Abelian gauge fields. We have seen at many points that the strange and abstract elements of this structure actually intersect with observation and even produce explanations for unexpected aspects of the behavior of elementary particles.
