- #1
alemsalem
- 175
- 5
when we draw Feynman diagrams we write external lines with onshell momentum only,,
but those "external" lines are internal lines to an extended process(?).
what defines the energy-momentum relation of the external states? the field equation and a(p)|p>,, so the offshell parts are due only to contraction and propagators?
thanks a lot :)
but those "external" lines are internal lines to an extended process(?).
what defines the energy-momentum relation of the external states? the field equation and a(p)|p>,, so the offshell parts are due only to contraction and propagators?
thanks a lot :)