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This book deals with quantum field theory, the language of modern elementary particles physics.
Based on university lectures given by the author, this volume provides a detailed technical treatment of quantum field theory that is particularly useful for students; it begins with the quantization of the most important free fields, the scalar, the spin-1/2 and the photon fields, and is then followed by a detailed account of symmetry properties, including a discussion on global and local symmetries and the spontaneous breaking of symmetries.
Perturbation theory, one-loop effects for quantum electrodynamics, and renormalization properties are also covered.
In this second edition new chapters have been introduced with a general description of path integral quantization both on quantum mechanics and in quantum field theory, with a particular attention to the gauge fields.
The path integral quantization of Fermi fields is also discussed.
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