Minor and unimportant tex issue

[kwccoin]

Great learning from the video and pdf and hence nothing more to ask for. Very grateful.

Just one minor thing : I did try to use Mac tex software (texstudio, texmaker, matted etc.) and seems I cannot generate your qft.pdf from qft.tex. As said minor and unimportant to the great sharing of qft. Just to report it for your notice. May be you use another software. But given your share the tex source, I just wonder.

[avstjohn]

I think I used TeXworks on Mac. There are additional libraries needed, especially for the section on Wick contractions.