Energy-momentum tensor, lagrangian density

Thread starter Fisica
Start date May 14, 2014
Tags

Density Energy-momentum Energy-momentum tensor Lagrangian Lagrangian density Tensor

AI Thread Summary

The discussion revolves around difficulties in calculating the energy-momentum tensor and issues with sign errors in the results. The user is attempting to derive a specific equation from a Lagrangian density but is struggling to match the expected outcome. They mention having a photo of their work, although the quality is poor, which complicates the review process. The main focus is on resolving the discrepancies between their calculations and the expected results. Clarification on the correct approach to derive the energy tensor is sought to address the sign problem.

May 14, 2014

Fisica

Homework Statement

I try to calculate the energy tensor, but i can't do it like the article, and i don't know, i have a photo but it don't look very good, sorry for my english, i have a problem with a sign in the result

Homework Equations

The Attempt at a Solution

In the photos you can see the attemp at a solution

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May 14, 2014

Fisica

This is the problem

May 14, 2014

Fisica

I must get the yellow (3) from yellow in (2)

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