hello
sorry for not posting that long. yes, indeed this wikipedia article is a little short and cannot help me with my problem.
neither could the textbooks that i tried: peskin & schroeder (introduction to quantum field theory), ryder (qft) and bjorken drell (relativistic quantum field...
hi sam!
thank you for your answer! it was a great help for me. i remember my professor saying that the gauge fields transform in the adjoint representation. up to now it's not yet clear to me, how the gauge transformation "prescription" A_{\mu}'=UA_\mu U^{-1}+\frac{i}{g} U (\partial _\mu...
hello everyone!
i've got a very special question on the gauge invariance (gauge group: SU(N), non-abelian) of the kinetic term in the lagrangian. is it invariant for any representation? i only know, that for the fundamental rep. this is true.
to be more specific:
the usual kinetic term...