earth2
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Hey guys
There are those vectors made of Pauli matrices like
[itex]\bar{\sigma}^\mu[/itex] and [itex]{\sigma}^\mu[/itex]. So if I have the product
[itex]\bar{\sigma}^\mu {\sigma}^\nu[/itex] I wonder if it is commutative? And if not, what is the commutator?
Cheers,
earth2
There are those vectors made of Pauli matrices like
[itex]\bar{\sigma}^\mu[/itex] and [itex]{\sigma}^\mu[/itex]. So if I have the product
[itex]\bar{\sigma}^\mu {\sigma}^\nu[/itex] I wonder if it is commutative? And if not, what is the commutator?
Cheers,
earth2