When does an accelerated electron not radiate?

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Classical electrodynamics assumes that any charged particle that has a non-zero acceleration is, all the time, radiating energy even if most of the time the energy loss is far too small to detect. Anyone who accepts the physical existence of stationary states rejects the “all the time” assumption.

I would read quantum mechanics as saying “If with no change in the velocity of the particle there is no attainable state of lower energy there will be no radiation?”

Is this correct?

Phil Gardner
 
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