It’s not just about collapse—every single-world QM interpretation either involves extra postulates, non-locality or other surprising alterations of physical law, or yields falsified predictions. The FAQ I linked to addresses these points in great detail.
MWI is simple in the Occam’s razor sense—it is what falls out of the equations of QM if you take them to represent reality at face value. Single-world meta-theories require adding additional restrictions which are at this time completely unjustified from the data.
Single world decoherence is a single world QM interpretation that avoids all those problems.
Nothing about decoherence necessitates many worlds. Decoherence was introduced as a fix to Everett’s theory , because it isn’t empirically adequate by itself. Preferred basis is another attempted fix.
So there isn’t a single many worlds theory and they all require additional ingredients to work.
It’s not just about collapse—every single-world QM interpretation either involves extra postulates, non-locality or other surprising alterations of physical law, or yields falsified predictions. The FAQ I linked to addresses these points in great detail.
MWI is simple in the Occam’s razor sense—it is what falls out of the equations of QM if you take them to represent reality at face value. Single-world meta-theories require adding additional restrictions which are at this time completely unjustified from the data.
Single world decoherence is a single world QM interpretation that avoids all those problems.
Nothing about decoherence necessitates many worlds. Decoherence was introduced as a fix to Everett’s theory , because it isn’t empirically adequate by itself. Preferred basis is another attempted fix.
So there isn’t a single many worlds theory and they all require additional ingredients to work.