PREfAce application in particle physics at that level.I have also taught the materia in Chapters 6 through 8 to undergraduates and have found that they had no problem in understanding the material and doing the homework. It is hoped that the presentation of the material is such that any good undergraduate studen hysics or electrical engineering can follow that sucha stude ill be motivated to co e the study of quantum field theory beyond its present scope.Additionally,beginning graduate students may also find it of use. Please communicate suggestions,criticisms and errors to the author at hpaar@ucsd.edu. Hans P.Paar January 2010 x PREFACE application in particle physics at that level. I have also taught the material in Chapters 6 through 8 to undergraduates and have found that they had no problem in understanding the material and doing the homework. It is hoped that the presentation of the material is such that any good undergraduate student in physics or electrical engineering can follow it, and that such a student will be motivated to continue the study of quantum field theory beyond its present scope. Additionally, beginning graduate students may also find it of use. Please communicate suggestions, criticisms and errors to the author at hpaar@ucsd.edu. Hans P. Paar January 2010