- #1
latentcorpse
- 1,444
- 0
In these notes:
http://www.damtp.cam.ac.uk/user/tong/qft/qft.pdf
Why can we not have a u-channel diagram in Figure 13 on p64?
http://www.damtp.cam.ac.uk/user/tong/qft/qft.pdf
Why can we not have a u-channel diagram in Figure 13 on p64?