I've been trying to find how the energy-momentum tensor changes if we add a total derivative to the lagrangian: L→L+dμXμ.
From the answer key: Tμν→Tμν+∂λFλμν Where Fλμν=∂Xλ∂(∂μϕ)∂νϕ−∂Xμ∂(∂λϕ)∂νϕ. Is the above answer right? I'm not able to get this result! any help?
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