Dustin said: “Decoherence as an interpretation does not imply Many Worlds unless the wavefunction is considered to be metaphysically real.”
Dustin’s referenced paper said:
The relational approach claims that a number of confusing
puzzles raised by Quantum Mechanics (QM) result from
the unjustified use of the notion of objective, absolute,
‘state’ of a physical system, or from the notion of absolute,
real, ‘event’.
The way out from the confusion suggested by RQM consists
in acknowledging that different observers can give different
accounts of the actuality of the same physical property
[6]. This fact implies that the occurrence of an event
is not something absolutely real or not, but it is only real
in relation to a specific observer. Notice that, in this context,
an observer can be any physical system.
Thus, the central idea of RQM is to apply Bohr and
Heisenberg’s key intuition that “no phenomenon is a phenomenon
until it is an observed phenomenon” to each observer
independently. This description of physical reality,
though fundamentally fragmented, is assumed in RQM to
be the best possible one, i.e. to be complete
The final step in the proof is left as an exercise to the reader.
Dustin said: “Decoherence as an interpretation does not imply Many Worlds unless the wavefunction is considered to be metaphysically real.”
Dustin’s referenced paper said:
The final step in the proof is left as an exercise to the reader.