Here is where the magic happens. The author walks the student through:
By combining the clarity of a classroom lecture with the depth of a research monograph, Nastase ensures that any student who puts in the work will emerge with a profound understanding of the quantum world. introduction to quantum field theory horatiu nastase pdf
For those needing a refresher on the basics before diving into QFT, Năstase also authored Classical Field Theory , which serves as a logical precursor. Introduction to Quantum Field Theory: Nastase, Horatiu Here is where the magic happens
H. Nastase, "Introduction to Quantum Field Theory," arXiv:1705.05698 [hep-th] (or current version). Năstase also authored Classical Field Theory