| Issue |
EPL
Volume 147, Number 2, August 2024
|
|
|---|---|---|
| Article Number | 25001 | |
| Number of page(s) | 4 | |
| Section | Atomic, molecular and optical physics | |
| DOI | https://doi.org/10.1209/0295-5075/ad6801 | |
| Published online | 21 August 2024 | |
Both orbital and spin torques originate from r × g
Department of Physics and Astronomy, University of Glasgow - Glasgow G12 8QQ, UK
Received: 7 June 2024
Accepted: 26 July 2024
Does the cross-product of the position and the electromagnetic momentum density, g, include the optical spin momentum? We answer this long-standing question in the affirmative by evaluating, explicitly, the torque exerted on a particle by a beam of light carrying angular momentum.
© 2024 The author(s)
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