Quantum Field Theory

This note is mostly based on Srednicki’s QFT textbook, serving as a review with narrative context. In the future, this note may be updated with the author’s understanding. Personally, I don’t like introducing too much math at first, just catching the physics picture and describing it with necessary mathematics, then completing the formal framework if you like (I plan to do so).

• I’m not a theorist, so there might not be much intelligent insights. But anyway, I believe a solid understanding of theory is important for any research in physics.