For someone with a background in classical and semiclassical physics who wants to learn about quantum field theory, there are several excellent books that provide a comprehensive introduction to the subject. Here are a few recommendations:
"Quantum Field Theory for the Gifted Amateur" by Tom Lancaster and Stephen J. Blundell: This book offers a gentle and intuitive introduction to quantum field theory, making it accessible to those with a background in classical physics. It covers the basics of quantum mechanics, introduces field theory, and gradually builds up to more advanced topics.
"Quantum Field Theory in a Nutshell" by A. Zee: This book provides a concise and conceptual introduction to quantum field theory. It focuses on the fundamental ideas and concepts rather than delving into intricate mathematical formalism. It is suitable for beginners with a solid background in classical physics.
"Quantum Field Theory and the Standard Model" by Matthew D. Schwartz: This book offers a modern and comprehensive introduction to quantum field theory, with a particular emphasis on the standard model of particle physics. It provides clear explanations, examples, and exercises that gradually develop the reader's understanding.
"An Introduction to Quantum Field Theory" by Michael E. Peskin and Daniel V. Schroeder: This is a widely used textbook that covers the foundations of quantum field theory, including topics such as Feynman diagrams, renormalization, and symmetries. It assumes a solid understanding of quantum mechanics and classical mechanics.
"Quantum Field Theory for the Gifted Amateur" by David McMahon: This book takes a self-study approach to quantum field theory, providing a step-by-step guide through the concepts and techniques. It is suitable for self-motivated learners with a background in classical physics and a willingness to engage with the material through exercises and problem-solving.
These books provide different perspectives and levels of rigor, so you can choose the one that best suits your learning style and mathematical background. It's recommended to supplement your reading with additional resources such as lecture notes, online video courses, and discussions with peers or instructors to enhance your understanding of the subject.