QFT

I'm currently in a quantum field theory graduate course, using A. Zee's Quantum Field Theory in a Nutshell. Anyone know of any similar to lower level qft books (either popular or text) which would make a good supplement?

I like Ryder's Quantum Field Theory. It should be at about the same level as Zee's (which I used sporadically as a supplement), but much more a traditional textbook, with lots of detail and calculations. I also remember checking out Michael Peskin's Introduction to Quantum Field Theory near the end of the semester and wishing I had looked at it sooner. It's a larger reference, and contains some things that I couldn't get out of Ryder or Zee.

On the popular side, I quite liked Andrew Watson's The Quantum Quark, which is more in-depth than most popular works. And I would be in trouble if I didn't mention Feynman's QED, which is at a lower level, but is Feynman.

(Edited to fix error and correct touchstones)

When I studied it, twenty years ago, we used Advanced Quantum Mechanics by J. J. Sakurai. It's elegant, terse, and I recommend it. Starts with regular scattering theory, goes through the Dirac equation, and ends up with the renormalization group, Lamb Shift, and Feynman diagrams.

I will second using Ryder's Quantum Field Theory as well as Michael Peskin's book!

It seems like I've spent most of the time since I wrote that message doing ever more QFT. Ryder is still on my shelf, but doesn't get as much use anymore, compared to Peskin & Schroeder, Weinberg's Quantum Theory of Fields, and Srednicki's Quantum Field Theory, along with more specialized works like Lattice Methods for Quantum Chromodynamics by Thomas DeGrand and Carleton DeTar. So many QFT books, so little time.