A. Neumaier's latest activity
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A. Neumaier replied to the thread Undergrad Particles' Intrinsic Properties in QFT.In differential geometry, there is a covariant concept of a 4-vector, and the momentum vector is such a 4-vector. Only the coordinates...
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A. Neumaier replied to the thread Graduate My questions about QFT and the standard model.1. Local and global symmetries are essentially different concepts. Electromagnetism has a local U(1) gauge symmetry that is essential to...
