# Derivation of Noether currents under Lorentz Transformation

1. Jun 21, 2014

### bagherihan

Is there anywhere I can see the explicit derivation for a massless real scalar and for the EM field?
thank you.

2. Jun 21, 2014

### ChrisVer

What do you actually mean?
You can always try to find the Noether current for Lorentz transformations in both cases...The result current I think is the Energy Momentum tensor....

3. Jun 21, 2014

### bagherihan

I mean for example that I saw that for the scalar field it is :
$$j^{μσμ} = x^ρT^{\mu \sigma} - x^σT^{\mu ρ}$$
I don't know how to get there, so I'd like to see the full derivation.

4. Jun 21, 2014

### samalkhaiat

The energy momentum tensor is the translation current. The current associated with Lorentz transformations is the rank-3 moment tensor. As a rule, when the parameter of the transformation carry n space-time indices, the associated current is a rank (n+1) tensor.

5. Jun 21, 2014

### samalkhaiat

You find it in PDF below. The work is about Noether theorem. I have not finished it yet, I will try (if time allows me) to finish it in the next 2 to 3 weeks

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