A Modern Approach to Quantum Mechanics · Problem 4.6

A System of Two Spin-1/2 Particles — John S. Townsend

Physics — Quantum Mechanics · spin-precession-expectation-values

Problem

Verify that the expectation values (4.23), (4.28), and (4.30) for a spin-

\frac{1}{2}

particle precessing in a uniform magnetic field

B_0

in the

z

direction satisfy (4.16).