Erickson’s Reviews > The Quantum Theory of Fields: Volume I, Foundations > Status Update

Finished Chapter 2 (though skipping some explicit details that don't matter to me now, also Appendix C). Now I can see why even this early on people find this to be one of the best QFT books around. It is not easy, but it goes all the way to the core, including the proof of Wigner's theorem (which I never read until now). Weinberg's approach also seems to me very brute force, which I am not sure if it's good or bad.

I cannot believe Section 2.5 (One-particle states) are still this hard for me -.-

Started Chapter 2. I just realized that this is the only QFT book I know that uses mostly-plus signature of the metric, which makes me oddly happier.

Took this chance to re-learn QFT from the ground up, for fun (because my work doesn't need it), but also for closure - I feel like I need to know QFT once, also once-and-for-all. I like to think that even though I was never in high-energy physics, I am now slightly better than the first time I tried it years ago.

Also, the first chapter is beautifully written, about historical (or logical?) development.

As hard as ever (even if you really sit down and do calculations)

Restarting this. Complementary reading to Schwartz and possibly Ryder's texts, depending on what I need.