Barrier Perturbation Induced Superarrivals and Nonlocality in a Time-Evolving Wave Packet

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We compute the time evolving probability of a Gaussian wave packet to be reflected from a rectangular potential barrier which is perturbed by reducing its height. A time interval is found during which this probability of reflection is enhanced (superarrivals) compared to the unperturbed case. Such a time evolving reflection probability implies that the effect of perturbation propagates across the wave packet faster than its group velocity - a curious form of nonlocality.
latex, 6 figures

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Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/94174

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/quant-ph/9907029
 http://arxiv.org/abs/quant-ph/9907029

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arXiv