- #1
earth2
- 86
- 0
Hey guys,
i'm stuck (yet again! :) )
I am somewhat confused by Dirac spinors [tex]u,\bar{u}[/tex]. Take the product (where Einstein summation convention is assumed):
[tex]u^r u^s\bar{u}^s[/tex] Is this the same as [tex]u^s\bar{u}^s u^r[/tex]? Probably not because u^r is a vector while the other thing is a matrix, right?
Cheers,
earth2
i'm stuck (yet again! :) )
I am somewhat confused by Dirac spinors [tex]u,\bar{u}[/tex]. Take the product (where Einstein summation convention is assumed):
[tex]u^r u^s\bar{u}^s[/tex] Is this the same as [tex]u^s\bar{u}^s u^r[/tex]? Probably not because u^r is a vector while the other thing is a matrix, right?
Cheers,
earth2