Posted: Dec 17, 2016 1:00 pm
by DavidMcC
CdesignProponentsist wrote:
newolder wrote:Some of the problems associated with the de Broglie/Bohm “pilot wave” idea include the inability to treat spin correctly (for a component of spin in, say, the z direction would break the rotational symmetry of pilot waves) and the fact that the pilot waves must act superluminally and therefore contradict special relativity in order to yield an interference pattern.

I'm pretty sure I've heard somewhere that they don't in fact need to act superluminally. I could be wrong. If I find it I'll link it.

They certainly don't. A standing wave, as its name implies, doesn't travel at all, because it is the superpositioon of waves travelling in both directions. The wavefunction must have already reached all positions in the set-up for the standing wave to exist.