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3GPP Weekly News No1

Why does the photon have no mass?

11/22/2025 | 3 min

This is a fantastic read for anyone who’s ever wondered why the photon has no mass. It moves beyond the simple “no Higgs coupling” answer to explain the profound role of gauge symmetry. The universe’s preference for preserving the U(1) symmetry is what truly forces the photon to be massless.

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Dirac, #physics, quantum, photon, symmetry,

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