Spin radiation from a rotating dipole
| Autor: | Radi I. Khrapko |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Angular momentum Field (physics) Astrophysics::High Energy Astrophysical Phenomena Flux 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Dipole Spin tensor Total angular momentum quantum number Quantum electrodynamics 0103 physical sciences Torque Electrical and Electronic Engineering 0210 nano-technology Spin (physics) |
| Zdroj: | Optik. 181:1080-1084 |
| ISSN: | 0030-4026 |
| DOI: | 10.1016/j.ijleo.2018.12.053 |
| Popis: | When the canonical spin tensor is used, a spin is detected along the axis of rotation of a rotating electric dipole. Early this spin radiation was obtained by Feynman in the frame of quantum mechanics. The magnitude of the spin flux is half the flux of the angular momentum that is emitted by a rotating dipole, according to modern electrodynamics, and this angular momentum flux is recognized here as an orbital angular momentum. Thus, the total angular momentum flux exceeds 1.5 times the value now recognized. It is shown that the torque experienced by a rotating dipole from the field is equal in magnitude to this total angular momentum flux. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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