# Homework Help: Momentum term to be expanded in dirac gamma matrices

1. Sep 22, 2012

### help1please

1. The problem statement, all variables and given/known data

I need help to expand some matrices

2. Relevant equations

$$\pi = \frac{\partial \mathcal{L}}{\partial \dot{q}} = i \hbar \gamma^0$$

3. The attempt at a solution

How do I expand

$$i\hbar \gamma^0$$

the matrix in this term, I am a bit lost. All the help would be appreciated!

2. Sep 23, 2012

### help1please

Can no one answer my question?

3. Sep 23, 2012

### TSny

That looks odd. Can you give us the Lagrangian that you're starting with?

4. Sep 23, 2012

### help1please

It has been a while since I dabbled with Dirac matrices... factoring gamma zero is simply 1.

DUH to me.

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