- #1
ice109
- 1,714
- 6
what is it? i need to know everything about it. i know it encompasses a lot of different stuff but yea if someone could point me to a book or webpage that explains it thoroughly.
additionally what does this equal
[tex]\sigma_{\mu}\sigma_{\alpha}\sigma_{\alpha}\sigma_{\mu}[/tex]
those are pauli matrices btw. alpha is just an arbitrary index to differentiate it from the [itex]\mu[/itex] index
additionally what does this equal
[tex]\sigma_{\mu}\sigma_{\alpha}\sigma_{\alpha}\sigma_{\mu}[/tex]
those are pauli matrices btw. alpha is just an arbitrary index to differentiate it from the [itex]\mu[/itex] index