Quantum Mechanics: Concepts and Applications · Problem 7.20

Identical Particles — Nouredine Zettili

Physics — Quantum Mechanics · rotation-matrices-trace

Problem

Calculate the trace of the rotation matrix D(1/2)(α,β,γ)D^{(1/2)}(\alpha,\beta,\gamma) for (a) β=π\beta = \pi and (b) α=γ=π\alpha = \gamma = \pi and β=2π\beta = 2\pi.

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