Equivalence between quantum backflow and classically forbidden probability flow in a diffraction-in-time problem
Quantum Physics
2019-05-01 v2
Abstract
Quantum backflow is an interference effect in which a matter-wave packet comprised of only plane waves with non-negative momenta exhibits negative probability flux. Here we show that this effect is mathematically equivalent to the appearance of classically-forbidden probability flux when a matter-wave packet, initially confined to a semi-infinite line, expands in free space.
Cite
@article{arxiv.1903.02053,
title = {Equivalence between quantum backflow and classically forbidden probability flow in a diffraction-in-time problem},
author = {Arseni Goussev},
journal= {arXiv preprint arXiv:1903.02053},
year = {2019}
}
Comments
5 pages, no figures