8 ms·
> it does not resolve the question of why and how we see one particular outcome. agreed. dechoherence doesn't explain particular outcomes. It explains the sc
by platz 10y ago
> it does not resolve the question of why and how we see one particular outcome.
agreed. dechoherence doesn't explain particular outcomes. It explains the scale & magnitude of mixing quantum states from different systems.
I thought "what kinds of physical interactions qualify as measurements" was referring to a different part of understanding QM. Decoherence doesn't explain which outcome, it does explains "part" of (or place constraints upon) the mechanism of measurement process.
- adrianratnapala 10y agoThe problem here is that very much of what we mean by "scale and mangitude" boils down to the frequency of particular outcomes when situations are repeated. So Decoherence only explains those things after you already have the Born rule (P ∝ |Ψ|^2). But that's the very thing we are trying to explain!
- platz 10y agoMaybe you are trying to explain the Born rule, but I was not claiming to explain that; I've already stated decoherence doesn't explain why we get certain outcomes instead of others.
- akvadrako 10y agoIt explains what we experience perfectly well. In the simple case of a 50/50 coin flip, there will be two equally real future versions of you. One will see heads, one tails. You don't need to dive into quantum mechanics to understand this concept; instead, consider being cloned twice while you are asleep, then killing the original. Your current self knows what will happen; you'll fall asleep and wake up as either one or the other, becoming both but never being both.