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Homework Statement
I am having a issue conceptualising the problem as I believe the answer is 0.
Part c)
Homework Equations
The Attempt at a Solution
My answer is 0 and it for the following reason. A the being say time t=0 the system is in some arbitary state, then when I got to measure the particle at t=t1 the wave function collapse into the ##e^{\frac{iE_at_1}{\hbar}}a \rangle## so then as it in this state when I go to measure the particle again the probability of it being ##E_b## is will be 0 as the two states are orthogonal to each other, have I assume the correctly?
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