Bostelmann, Henning, Cadamuro, Daniela and Lechner, Gandalf  ORCID: https://orcid.org/0000-0002-8829-3121
2017.
Quantum backflow and scattering.
Physical Review a
96
(1)
, 012112.
10.1103/PhysRevA.96.012112
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Abstract
Backflow is the phenomenon that the probability current of a quantum particle on the line can flow in the direction opposite to its momentum. In this article, previous investigations of backflow, pertaining to interaction-free dynamics or purely kinematical aspects, are extended to scattering situations in short-range potentials. It is shown that backflow is a universal quantum effect which exists in any such potential, and is always of bounded spatial extent in a specific sense. The effects of reflection and transmission processes on backflow are investigated, both analytically for general potentials, and numerically in various concrete examples.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Mathematics |
| Subjects: | Q Science > QA Mathematics Q Science > QC Physics |
| Publisher: | American Physical Society |
| ISSN: | 1050-2947 |
| Date of First Compliant Deposit: | 25 May 2017 |
| Date of Acceptance: | 24 May 2017 |
| Last Modified: | 06 Nov 2024 19:00 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/100890 |
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