https://www.dummies.com/article/academics-the-arts/science/physics/string-theory-and-massless-particles-178125/
String Theory and Massless Particles | dummies
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https://arxiv.org/abs/hep-th/9907220
[hep-th/9907220] Gauge Transformations on Massless Spin-1/2 Particles and Neutrino Polarization as...
Abstract page for arXiv paper hep-th/9907220: Gauge Transformations on Massless Spin-1/2 Particles and Neutrino Polarization as a Consequence of Gauge...
https://arxiv.org/abs/hep-th/0201262
[hep-th/0201262] Internal Space-time Symmetries of Massless Particles and Neutrino Polarization as...
Abstract page for arXiv paper hep-th/0201262: Internal Space-time Symmetries of Massless Particles and Neutrino Polarization as a Consequence of Gauge...
https://www.scirp.org/journal/paperinformation?paperid=47363
Quantum-Optical Foundations of Massive and Massless Particles
Discover a theory free of divergences in QED! Explore the implications of Dirac's equation and Lorentz invariance on electron behavior. Uncover the binding...
quantum opticalfoundationsmassivemasslessparticles