Quantum backflow and scattering

Bostelmann H, Cadamuro D, Lechner G (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Physical Review A American Physical Society

Book Volume: 96

Article Number: 012112

Journal Issue: 1

DOI: 10.1103/PhysRevA.96.012112

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 paper, 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.

Authors with CRIS profile

Gandalf Lechner

Additional Organisation(s)

Lehrstuhl für Mathematik (Operatoralgebren)

Involved external institutions

Technische Universität München (TUM) DE Germany (DE) Cardiff University GB United Kingdom (GB) University of York GB United Kingdom (GB)

How to cite

APA:

Bostelmann, H., Cadamuro, D., & Lechner, G. (2017). Quantum backflow and scattering. Physical Review A, 96(1). https://dx.doi.org/10.1103/PhysRevA.96.012112

MLA:

Bostelmann, Henning, Daniela Cadamuro, and Gandalf Lechner. "Quantum backflow and scattering." Physical Review A 96.1 (2017).

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