An Introduction to Quantum Field Theory Book

	Preface
1	Classical fields and symmetries	3
2	Canonical quantization	29
3	Path integrals, perturbation theory and Feynman rules	58
4	Scattering and cross sections for scalar fields	94
5	Spinors, vectors and gauge invariance	119
6	Spin and canonical quantization	147
7	Path integrals for fermions and gauge fields	176
8	Gauge theories at lowest order	204
9	Loops, regularization and unitarity	247
10	Introduction to renormalization	280
11	Renormalization and unitarity of gauge theories	319
12	Perturbative corrections and the infrared problem	369
13	Analytic structure and infrared finiteness	411
14	Factorization and evolution in high-energy scattering	449
15	Epilogue: Bound states and the limitations of perturbation theory	492
	App. A: Time evolution and the interaction picture	502
	App. B: Symmetry factors and generating functionals	509
	App. C: The standard model	514
	App. D: T, C and CPT	523
	App. E: The Goldstone theorem and [pi][superscript 0] [actual symbol not reproducible] 2y	532
	App. F: Groups, algebras and Dirac matrices	539
	App. G: Cross sections and Feynman rules	545
	References	551
	Index	562