What is the fundamental theory of quantum mechanics?

[bhobba]

It's not only that BM is compatible with decoherence, but decoherence is actually ESSENTIAL for BM to work. In fact, in his famous paper Bohm actually anticipated the main ingredients of decoherence, before the notion of "decoherence" in quantum physics even existed.

I bow to your superior knowledge of it.

Thanks
Bill

 

[stevendaryl]

It must be, because BM is indistinguishable from the formalism of QM.

The modern version of collapse, which strictly only applies to filtering observations, is how an improper mixture becomes a proper one, which is the issue 3 mentioned previously ie the problem of definite outcomes. Since in BM particles have a definite position and trajectory it's easy to see the improper mixture is a proper one.

Thanks
Bill

I'm not convinced that it's the same (BM and standard QM). In BM, the mixture is always proper, while in standard QM, measurement (or decoherence) is needed to change a pure state into a mixed state.