Angular momentum flow without anything carrying it

Yakir Aharonov; Daniel Collins; Sandu Popescu

doi:10.1103/PhysRevA.110.L030201

Angular momentum flow without anything carrying it

Yakir Aharonov, Daniel Collins, Sandu Popescu

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

4 Citations (Scopus)

Abstract

Transfer of conserved quantities between two remote regions is generally assumed to be a rather trivial process: a flux of particles carrying the conserved quantities propagates from one region to another. We however demonstrate a flow of angular momentum from one region to another across a region of space in which there is a vanishingly small probability of any particles (or fields) being present. This shows that the usual view of how conservation laws work needs to be revisited.

Original language	English
Article number	L030201
Pages (from-to)	1-6
Number of pages	6
Journal	Physical Review A
Volume	110
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevA.110.L030201
Publication status	Published - 5 Sept 2024

Bibliographical note

Publisher Copyright:
© 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Keywords

quant-ph

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Curiouser and curiouser: delving into quantum Cheshire cats
Collins, D. G. (Interviewee), Popescu, S. (Speaker), Aharonov, Y. (Interviewee) & Skrzypczyk, P. (Contributor)
29 Apr 2025
Activity: Other activity types › Media coverage or participation
A new Quantum Cheshire Cat thought experiment is out of the box
Collins, D. G. (Interviewee), Popescu, S. (Interviewee) & Aharonov, Y. (Interviewee)
8 Sept 2024
Activity: Other activity types › Media coverage or participation
New quantum paradox triggers controversy
Collins, D. G. (Interviewee), Popescu, S. (Interviewee) & Aharonov, Y. (Interviewee)
27 Aug 2024
Activity: Other activity types › Media coverage or participation

Cite this

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AB - Transfer of conserved quantities between two remote regions is generally assumed to be a rather trivial process: a flux of particles carrying the conserved quantities propagates from one region to another. We however demonstrate a flow of angular momentum from one region to another across a region of space in which there is a vanishingly small probability of any particles (or fields) being present. This shows that the usual view of how conservation laws work needs to be revisited.

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Angular momentum flow without anything carrying it

Abstract

Bibliographical note

Keywords

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Activities

Curiouser and curiouser: delving into quantum Cheshire cats

A new Quantum Cheshire Cat thought experiment is out of the box

New quantum paradox triggers controversy

Cite this