1. The problem statement, all variables and given/known data Just trying to find the spin 3/2 rotation matrix, i've found spin 1/2 and spin 1. This isn't a homework problem just studying some other spins. 2. Relevant equations For spin 1/2: Rn(Φ) = cos(Φ/2)1ˆ − isin(Φ/2)σn For spin 1: Un(Φ) = e −iΦSn = 1ˆ − isin(Φ) · Sn − (1ˆ − cos(Φ)) · (Sn) 2 So what is it for spin 3/2? I can't figure out the rotation matrix. 3. The attempt at a solution Spin 3/2 will be a 4x4 matrix because it has 4 beams (2s+1). However I can't figure it out... I worked out 1/2 and 1 could someone work out 3/2?