Pouramat
- 27
- 1
- Homework Statement
- In section Coulomb Potential stated that: "You can easily verify that the other terms mentioned below vanish if ##p = p' = o##"
which we are working in nonrelativistic limit
- Relevant Equations
- $$\bar u(p') \gamma^i u(p)$$
$$\bar u(p') \gamma^i u(p) = u^\dagger(p') \gamma^0 \gamma^i u(p)$$
if ##p = p'## we can use
$$u^\dagger(p) u(p) = 2m \xi^\dagger \xi$$
but how can we conclude the statement?
if ##p = p'## we can use
$$u^\dagger(p) u(p) = 2m \xi^\dagger \xi$$
but how can we conclude the statement?