Quantum backflow and scattering

Bostelmann H, Cadamuro D, Lechner G (2017)

Publication Type: Journal article

Publication year: 2017


Book Volume: 96

Article Number: 012112

Journal Issue: 1

DOI: 10.1103/PhysRevA.96.012112


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.

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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


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

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