Quantum particle displacement by a moving localized potential trap

Details Quantum particle displacement by a moving localized potential trap Quantum particle displacement by a moving localized potential trap

2008-12-09

arxiv.org/abs/0812.1632v1

Physics

Quantum Physics

5 pages, 6 figures

Scientific paper

We describe the dynamics of a bound state of an attractive $\delta$-well under displacement of the potential. Exact analytical results are presented for the suddenly moved potential. Since this is a quantum system, only a fraction of the initially confined wavefunction remains confined to the moving potential. However, it is shown that besides the probability to remain confined to the moving barrier and the probability to remain in the initial position, there is also a certain probability for the particle to move at double speed. A quasi-classical interpretation for this effect is suggested. The temporal and spectral dynamics of each one of the scenarios is investigated.

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