Physics – Quantum Physics
Scientific paper
2003-01-21
Physics
Quantum Physics
Scientific paper
10.1016/S0375-9601(03)00461-4
We study the time evolution for the quantum harmonic oscillator subjected to a sudden change of frequency. It is based on an approximate analytic solution to the time dependent Ermakov equation for a step function. This approach allows for a continuous treatment that differs from former studies that involve the matching of two time independent solutions at the time when the step occurs.
Fernandez-Guasti M.
Moya-Cessa Héctor
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