quantum field theory - Is there a mistake in a QFT textbook? - Physics Stack Exchange

I tried to calculate one of the problems in the textbook Gauge Theory of Elementary Particle Physics by Ta-Pei Cheng and Ling-Fong Li. On page 248 you can find the following calculation of a loop

quantum field theory - Mistakes in the Wikipedia figure on elementary particle interactions - Physics Stack Exchange

Buy Student Friendly Quantum Field Theory Volume 2: The Standard Model Book Online at Low Prices in India

quantum field theory - How are real particles created? - Physics Stack Exchange

Why do people have different definitions of quantum? Is quantum mechanics a logically consistent, self-consistent theory? - Quora

Quantum Field Theory in Condensed Matter Physics

Quantum Fluctuations and Their Energy – Of Particular Significance

Problems in Quantum Field Theory

How does Quantum Field Theory (QFT) redefine our understanding of the universe's cosmic tapestry? - Quora

Quantum Mechanics Collection, PDF, Quark

Which are the best books to start with Quantum Field Theory as a beginner? - Quora