Quantum Supearrivals
Quantum Physics
2009-11-07 v2
Abstract
A curious effect is uncovered by calculating the it time evolving probability of reflection of a Gaussian wave packet from a rectangular potential barrier while it is perturbed by reducing its height. A time interval is found during which this probability of reflection is larger (``superarrivals'') than in the unperturbed case. This nonclassical effect can be explained by requiring a wave function to act as a ``field'' through which an action, induced by the perturbation of the boundary condition, propagates at a speed depending upon the rate of reducing the barrier height.
Keywords
Cite
@article{arxiv.quant-ph/0103001,
title = {Quantum Supearrivals},
author = {S. Bandyopadhyay and A. S. Majumdar and D. Home},
journal= {arXiv preprint arXiv:quant-ph/0103001},
year = {2009}
}
Comments
4 new .eps figures added. Majour changes include explanation of superarrivals through dynamical effect induced by perturbing barrier