2000/07/28 by Richard Shurtleff, Shurtleff, Richard
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Particle Accelerators and Free-Electron Lasers #Quantum and Classical Electrodynamics #Scientific Research and Discoveries #hep-th
paper · pdf · doi:10.48550/arxiv.hep-th/0007232
15 pages, no figures, LaTex
openalex publication_date 2000/07/28 · arxiv created 2000/07/29 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Rotation symmetry is less constraining than space-time symmetry. The free electron propagator is a projection operator that we show can be constructed from rotation symmetric projection operators. Rotation-based identifications of time, space, energy, momentum, polarization matrices, and the positron hypothesis are determined by the constraints that turn rotation symmetric projection operators into the electron propagator. PACS: 11.30.-j, 11.30.Cp, and 03.65.Fd