Quantum field theory is a complex subject that typically requires a solid understanding of quantum mechanics and some mathematical background. However, if you're looking for undergraduate-level textbooks on quantum field theory that don't assume much prior knowledge, there are a few options that can provide an introduction to the subject. While these textbooks may still assume a basic familiarity with quantum mechanics, they aim to make the transition to quantum field theory more accessible. Here are a few recommendations:
"Quantum Field Theory for the Gifted Amateur" by Tom Lancaster and Stephen J. Blundell: This book offers a gentle introduction to quantum field theory, assuming only a basic knowledge of quantum mechanics and special relativity. It provides intuitive explanations and avoids heavy mathematical formalism, making it suitable for self-study.
"An Introduction to Quantum Field Theory" by Michael E. Peskin and Daniel V. Schroeder: While this textbook is widely used at the graduate level, it can also be approached by motivated undergraduates. It provides a comprehensive introduction to quantum field theory, starting from basic principles and gradually building up the mathematical foundations. It covers a wide range of topics and includes exercises to reinforce understanding.
"Quantum Field Theory in a Nutshell" by A. Zee: This book offers a unique and informal approach to quantum field theory. It introduces the subject through various physical examples and conceptual ideas, making it more intuitive for beginners. It is less mathematically rigorous compared to some other textbooks, but it provides a good overview of the subject.
"Quantum Field Theory Demystified" by David McMahon: This book is part of the "Demystified" series, which aims to explain complex subjects in a simplified and accessible manner. It covers the basics of quantum field theory, focusing on conceptual understanding rather than detailed mathematical formalism. It can be a helpful introductory resource for those with limited background knowledge.
Remember that studying quantum field theory is a challenging task, and it is advisable to supplement your learning with additional resources, such as lecture notes, online courses, or video lectures, to reinforce your understanding and tackle the mathematical aspects of the subject.