There are several books on Quantum Field Theory (QFT) that are suitable for advanced undergraduate students. Here are some recommendations:
"Quantum Field Theory for the Gifted Amateur" by Tom Lancaster and Stephen J. Blundell: This book provides a gentle introduction to QFT, assuming minimal prior knowledge. It covers the basic concepts and techniques of QFT, such as Lagrangian formalism, Feynman diagrams, and renormalization, in an accessible manner.
"Quantum Field Theory in a Nutshell" by A. Zee: This book offers a comprehensive introduction to QFT. It covers a wide range of topics, including classical field theory, canonical quantization, path integrals, gauge theories, and the standard model of particle physics. Zee's writing style is engaging and intuitive, making it accessible to motivated undergraduate students.
"An Introduction to Quantum Field Theory" by Michael E. Peskin and Daniel V. Schroeder: This book is widely used as a textbook in many undergraduate and graduate courses. It covers the essential topics of QFT, including Feynman diagrams, renormalization, and symmetry breaking. The book provides a solid foundation in QFT and prepares students for more advanced topics.
"Quantum Field Theory and the Standard Model" by Matthew D. Schwartz: This book focuses on the connection between QFT and the standard model of particle physics. It covers topics like quantum electrodynamics (QED), the renormalization group, and the Higgs mechanism. It is suitable for advanced undergraduates with a strong mathematical background.
"Quantum Field Theory: A Modern Introduction" by Michele Maggiore: This book provides a modern and comprehensive introduction to QFT. It covers advanced topics such as effective field theory, the renormalization group, and non-perturbative methods. While it may be more suitable for students with a solid foundation in QFT, it can still be used as a reference for motivated advanced undergraduates.
Remember that Quantum Field Theory is a complex subject, and it is beneficial to supplement your learning with lectures, problem sets, and discussions with instructors and peers.