Aharonov-Bohm Radiation of Fermions

Details Aharonov-Bohm Radiation of Fermions Aharonov-Bohm Radiation of Fermions

2010-03-02

arxiv.org/abs/1003.0674v3

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, 6 figures. Version 2: Expanded discussion on boundary conditions obeyed by Dirac equation mode functions (in Section

Scientific paper

We analyze Aharonov-Bohm radiation of charged fermions from oscillating solenoids and cosmic strings. We find that the angular pattern of the radiation has features that differ significantly from that for bosons. For example, fermionic radiation in the lowest harmonic is approximately isotropically distributed around an oscillating solenoid, whereas for bosons the radiation is dipolar. We also investigate the spin polarization of the emitted fermion-antifermion pair. Fermionic radiation from kinks and cusps on cosmic strings is shown to depend linearly on the ultraviolet cut-off, suggesting strong emission at an energy scale comparable to the string energy scale.

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