The vacuum is teeming with real magnetic pairs; some are ‘invisible’ particle:antiparticles with no charge and no moment

Twitter comment on Physical Review Letters @PhysRevLett  Feb 13  Measurement of the Electron Magnetic Moment to 0.13 parts per trillion (replacing a limit from 14 years ago).  Letter: https://go.aps.org/3E3jjSX  Viewpoint: https://go.aps.org/3xfgeLT  Replying to @PhysRevLett  —  One of my favorite experiments. Thanks. I particularly like “according to quantum physics, the vacuum is teeming with virtual particles”. Except I
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