This book provides an introduction to Quantum Field Theory (QFT)
at an elementary level-with only special relativity,
electromagnetism and quantum mechanics as prerequisites. For this
fresh approach to teaching QFT, based on numerous lectures and
courses given by the authors, a representative sample of topics has
been selected containing some of the more innovative, challenging
or subtle concepts. They are presented with a minimum of technical
details, the discussion of the main ideas being more important than
the presentation of the typically very technical mathematical
details necessary to obtain the final results.
Special attention is given to the realization of symmetries in
particle physics: global and local symmetries, explicit,
spontaneously broken, and anomalous continuous symmetries, as well
as discrete symmetries. Beyond providing an overview of the
standard model of the strong, weak and electromagnetic interactions
and the current understanding of the origin of mass, the text
enumerates the general features of renormalization theory as well
as providing a cursory description of effective field theories and
the problem of naturalness in physics. Among the more advanced
topics the reader will find are an outline of the first principles
derivation of the CPT theorem and the spin-statistics
connection.
As indicated by the title, the main aim of this text is to
motivate the reader to study QFT by providing a self-contained and
approachable introduction to the most exciting and challenging
aspects of this successful theoretical framework."
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