Recent content by Tian

And you are right, there is a sign problem, but I don't know the mean of “ the +-vertex has the opposite sign of the --vertex”

Thank you very much , the note maybe hard to read . I should distinguish between three momentum and four momentum. Capital letters represent four momentum, and small letters represent three momentum. I hope you can see my note again. This probelm confused me long time .

Thank you veery much . It should be done in the adjoint repesentation.

Here is my solution