UNITJ (Spin and Total angtrlar momentum)
Introduction to spin and total angular momentum, spin angular momentum and Pauli's spin
matrices, total angular momenom J. explicit matrices for J'1,J,,J, &J - ,combination
of two
angular moment and tensor operator, Clebsch-Gordan coefficients for jtll2, j2 =ll2 and
i=\, j2 =112, wigner-Eckart theorem.