Quantum Harmonic Oscillator

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andrewthorn
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A harmonic oscillator with frequency ω is in its ground state when the stiffness of the spring is instantaneously reduced by a factor f2<1, so its natural frequency becomes f2ω. What is the probability that the oscillator is subsequently found to have energy 1.5(hbar)f2ω? Thanks
 
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Sounds like a homework problem that belongs in the homework help section. You will need to show an attempt to solve.
 

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