Show that, for a Hermitian operator Q, the operator U = exp [-iQ] is unitary.
Question:
Show that, for a Hermitian operator Q̂, the operator Û = exp [-iQ̂] is unitary.
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Step by Step Answer:
We define the exponential of an operator by its power series so that Taking the adjoint we comp...View the full answer
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Related Book For 
Introduction To Quantum Mechanics
ISBN: 9781107189638
3rd Edition
Authors: David J. Griffiths, Darrell F. Schroeter
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