Both orbital and spin torques originate from r x g
Optics
2024-06-10 v1
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.
Keywords
Cite
@article{arxiv.2406.04982,
title = {Both orbital and spin torques originate from r x g},
author = {Frances Crimin and Stephen M. Barnett},
journal= {arXiv preprint arXiv:2406.04982},
year = {2024}
}