A Modern Approach to Quantum Mechanics · Problem 3.7

Angular Momentum — John S. Townsend

Physics — Quantum Mechanics · schwarz-inequality

Problem

Derive the Schwarz inequality ⟨α∣α⟩⟨β∣β⟩≥∣⟨α∣β⟩∣2\langle\alpha|\alpha\rangle\langle\beta|\beta\rangle \geq |\langle\alpha|\beta\rangle|^2

Related theory

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