Induced Quantized Spin Current in Vacuum
High Energy Physics - Phenomenology
2021-09-20 v2 Other Condensed Matter
High Energy Physics - Experiment
High Energy Physics - Theory
Abstract
We uncover a fundamental effect of the QED vacuum in an external electromagnetic (EM) field. We show that the quantized vacuum of electrons is spin polarized by the EM field and manifests as a vacuum spin current. An experiment is proposed to measure the spin torque exerted by the spin current by measuring the twisted angle of the director axis of a nematic liquid crystal.
Cite
@article{arxiv.2105.00148,
title = {Induced Quantized Spin Current in Vacuum},
author = {Chong-Sun Chu and Chun-Hei Leung},
journal= {arXiv preprint arXiv:2105.00148},
year = {2021}
}
Comments
6 pages, 2 figures. v2: version appeared in PRL