I have since realized I was confusing the KG field as vector instead of scaler! I've now moved to correct this and have started like this
Lagrange density of KG
$$\mathcal{L} = \dfrac{1}{2}\left(\partial^\mu \phi\right) \left(\partial_\mu \phi \right) - \dfrac{1}{2}m^2\phi^2
$$
from taking some...
Homework Statement
I want to be able, for an arbitrary Lagrangian density of some field, to derive the energy-momentum tensor using Noether's theorem for translational symmetry.
I want to apply this to a specific instance but I am unsure of the approach.
Homework Equations
for a field...