Special relativity gives that time for a (traveler on) photon do not run. It also gives that every moving elementary particle rest in some inertial system, but photon does not rest in any inertial system.(adsbygoogle = window.adsbygoogle || []).push({});

But how this can be visible in Quantum field theory or in QED? An electron and a photon are too similar in QED.

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# Time in QFT and in special relativity

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