Consider a ket space spanned by the eigenkets {| ?? >} of a Hermitian operator A. There

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Consider a ket space spanned by the eigenkets {| ?? >} of a Hermitian operator A. There is no degeneracy.

a. Prove that is the null operator,

b. what is the significance of?

c. Illustrate (a) and (b) using A set equal to Sz of a spin ? system.

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Modern Quantum Mechanics

ISBN: 978-0201539295

Revised Edition

Authors: J.J Sakurai

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Question Posted: Apr 16, 2011 06:41 AM

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Consider a ket space spanned by the eigenkets {| ?? >} of a Hermitian operator A. There

Question:

Part a П(4- а') a' Part b (A-a") , П a" + a' (a'- a")

Step by Step Answer:

a Let tas and Ala a product over all eigenvalues and 4 therefore satisfy I Aajs 0 operator I ...View the full answer

Modern Quantum Mechanics

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