**Subject:** Re: AW: 130(9) : Algebra of the SU(2) Group and Origin of the Pauli Matrices

**Date:** Wed, 22 Apr 2009 14:04:55 EDT

These notes are an expansion of notes in Lewis H.Ryder, “Quantum Field Theory” (Cambridge 1996, 2nd ed.). The zeta in eq. (22) is teh matrix

zeta = 0 1 1 0

Ryder does indeed redefine the spinor as in eq.(23), and this is indeed confusing until one gets used to it. Then he introduced the ~ symbol in eq. (24) to mean “transforms in the same way as”. He also leaves out a lot of detail which I put back in. I recommend buying the book or borrowing it from a library.

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