Induced Quantized Spin Current in Vacuum
arXiv:2105.00148 · doi:10.1103/PhysRevLett.127.111601
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.
arXiv comment6 pages, 2 figures. v2: version appeared in PRL
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Cited by in corpus (4)
- Advances in QED with intense background fields
- Combined Lorentz symmetry: lessons from superfluid 3He
- Chiral current induced by torsional Weyl anomaly
- Self-consistent equation for torsion arising as a consequence of the Dirac sea quantum fluctuations in external classical electromagnetic and gravitational fields