A Modern Approach to Quantum Mechanics · Problem 1.4

Rotation of Basis States and Matrix Mechanics — John S. Townsend

Physics — Quantum Mechanics · spin-half-sx-measurement

Problem

Repeat the calculations of Problem 1.3 (b) and (c) for measurements of

S_x

. Hint: Infer what the probability of obtaining

-\hbar/2

for

S_x

is from the probability of obtaining

\hbar/2