Recent content by JesseM

And would you say the statement about dynamics factorizing prior to recoherence doesn't depend on any choice of how we divide the world into subsystems, i.e. we either aren't allowed to treat everything inside the box as a single "subsystem", or even if we are allowed to do that, the statement...

Sure, but my intent was not to generalize to ordinary measurements. I'm just curious about what an interpretation like Barandes' would say about this type of exotic scenario because it seems to me that the answer would probably then generalize to much simpler experiments like the 2-particle...

As I suggested in my first comment to jeffn1, to make a Wigner's friend thought experiment a bit more realistic we could imagine a large quantum computer running a simulation of the friend in the box, which can incorporate whatever sorts of technologies (eg temperatures near absolute zero and...

Do you mean the answer to whether a division event happens at a particular moment (when Wigner's friend makes a measurement) can change at later times (when the box is opened and Wigner measures the interior)? If so does this depend on the conceptual choice of how you divide the world into...

I wasn't suggesting any retrocausality, if you look at Sean Carroll's discussion of the delayed choice quantum eraser which I linked, he says that he says there is no need for it in the many-world interpretation ('There’s no need to invoke retrocausality to explain the delayed-choice experiment...

I think the difficulty with assuming definite truths about recorded outcomes that happen in the box has to do with scenarios where the records of those outcomes are thoroughly erased prior to the box being opened by external observers. One could even imagine a variant of the delayed choice...

Is there any notion of an objective truth about what a maximally exhaustive list of division events in a given region would look like, such that modeling choices that leave some out are akin to macrostates in statistical mechanics that leave out some of the full microstate information? Or are...

My understanding is that the main reasons physicists don't see decoherence as fully resolving the measurement problem are that (1) it depends on the choice of how to make the division between "system" and "environment", which still has to be put in by hand rather than determined in some...

Is it possible to summarize how they fall out of the formalism? Is it a variant of decoherence? Could one take a description of wave function evolution in the standard formalism (or some other standard description, like using a density matrix for the evolution of an open system), translate it...

Does the choice of which physical facts at which moments are division events have to be "put in by hand" so to speak rather than emerging from dynamics? So basically we might consider the broader set of all possible non-Markovian realizers (including ones whose probabilities don't match QM in...

So each non-Markovian realizer would be a specific hypothesis about what the configurations are doing (at least in a probabilistic sense) at all times including between "division events", but the family of possible non-Markovian realizers would be chosen so that they all agree on probabilities...

Is that because the interpretation is designed to be compatible with any one of a family of more specific possible hypotheses about the way configurations behave while the system is isolated this way (if so, I wonder if Bohmian mechanics might be included in this family), and "agnostic" about...

Thanks--also on the comment by jbergman above that "particle paths are not necessarily continuous", there were also some comments on the other Barandes thread that suggested that as long as there was coherence between branches with different which-path information, there could be discontinuous...

A basic question, when you refer to "the system's classical configuration" does that refer to position states, so that for Barandes position is privileged in a way similar to Bohmian mechanics, even in circumstances where decoherence favors energy eigenstates? I only watched a quick bit of the...

Can anyone recommend a good book that would cover this, along with other aspects of variance and other measures of correlation like Pearson's and Spearman's that might be helpful in building conceptual intuitions about how to interpret them? (for example, this comment uses a simple example to...