This book uses less strict yet still formal mathematical language
to clarify a variety of concepts in Quantum Field Theory that
remain somewhat "fuzzy" in many books designed for undergraduates
and fresh graduates. The aim is not to replace formal books on
Quantum Field Theory, but rather to offer a helpful complementary
tool for beginners in the field. Features include a reader-friendly
introduction to tensor calculus and the concept of manifolds; a
simple and robust treatment for dimensional regularization; a
consistent explanation of the renormalization procedure, step by
step and in a transparent manner at all orders, using the QED
Lagrangian; and extensive treatment of infrared as well as
ultraviolet divergences. The most general (Lorentz invariant) form
of Noether's theorem is presented and applied to a few simple yet
relevant examples in Quantum Field Theory. These and further
interesting topics are addressed in a way that will be accessible
for the target readership. Some familiarity with basic notions of
Quantum Field Theory and the basics of Special Relativity is
assumed.
General
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