What are some good books for non physicists on quantum field theory?
I don't think there are any. There are some books about the particles that the QFTs describe, but not about the actual field theories. The only one I know is good is "QED: The strange theory of light and matter" by Richard Feynman. QED is the quantum field theory of electrons, positrons, photons and their interactions, but he doesn't talk about the fields at all. It's still a very good book that gives you a pretty good idea about how the world actually behaves.
You might try chapters 24, 25, and 26 from The Road to Reality: A Complete Guide to the Laws of the Universe by Roger Penrose,
Bruce Schumm's "Deep Down Things" is really quite good at giving a feel for the mathematical concepts involved in QFT and the Standard Model for the non-physicist.
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