Both orbital and spin torques originate from r x g
Abstract
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.
- Publication:
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arXiv e-prints
- Pub Date:
- June 2024
- DOI:
- 10.48550/arXiv.2406.04982
- arXiv:
- arXiv:2406.04982
- Bibcode:
- 2024arXiv240604982C
- Keywords:
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- Physics - Optics