Recent content by Kyri_Phys

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...

So the factor of $$\varepsilon^\mu$$ is incorrect also

I thought it was a rule that whenever there are repeated indices one should be up and one down. One of the indices should be down?

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...