To this I add, by the way, that Dirac and others have noted that a classical theory of point electrons -- even when augmented by suitable non-local boundary conditions -- is essentially untenable. A consistent classical theory of radiating charges has yet to be formulated.
As an empirical matter, a uniformly accelerated charge does not radiate. Dirac calculates the radiation field in the vicinity of an accelerating point electron, and finds that it vanishes when the acceleration is constant. The question is: why? That's where this discussion began.
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Dirac, of course, supplies an answer. It has nothing to do with the Unruh effect. It does, however, depend crucially on non-local conditions, added to Maxwell theory.
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As does Unruh's theory, of course, as well.
End of conversation
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