# Quantum Harmonic Oscillator

1. Feb 3, 2014

### andrewthorn

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

2. Feb 3, 2014

### Avodyne

Sounds like a homework problem that belongs in the homework help section. You will need to show an attempt to solve.