> On 13 Sep 2019, at 00:44, Lawrence Crowell <[email protected]> > wrote: > > > > On Thursday, September 12, 2019 at 11:44:51 AM UTC-5, Philip Thrift wrote: > > > On Thursday, September 12, 2019 at 8:45:22 AM UTC-5, Lawrence Crowell wrote: > On Thursday, September 12, 2019 at 4:20:46 AM UTC-5, Philip Thrift wrote: > > > On Wednesday, September 11, 2019 at 11:45:41 PM UTC-5, Alan Grayson wrote: > https://www.wired.com/story/sean-carroll-thinks-we-all-exist-on-multiple-worlds/ > > <https://www.wired.com/story/sean-carroll-thinks-we-all-exist-on-multiple-worlds/> > > > > Many Worlds is where people go to escape from one world of quantum-stochastic > processes. They are like vampires, but instead of running away from sunbeams, > are running away from probabilities. > > @philipthrift > > This assessment is not entirely fair. Carroll and Sebens have a paper on how > supposedly the Born rule can be derived from MWI I have yet to read their > paper, but given the newsiness of this I might get to it. One advantage that > MWI does have is that it splits the world as a sort of quantum frame dragging > that is nonlocal. This nonlocal property might be useful for working with > quantum gravity, > > I worked a proof of a theorem, which may not be complete unfortunately, where > the two sets of quantum interpretations that are ψ-epistemic and those that > are ψ-ontological are not decidable. There is no decision procedure which can > prove QM holds either way. The proof is set with nonlocal hidden variables > over the projective rays of the state space. In effect there is an > uncertainty in whether the hidden variables localize extant quantities, say > with ψ-ontology, or whether this localization is the generation of > information in a local context from quantum nonlocality that is not extant, > such as with ψ-epistemology. Quantum interprertations are then auxiliary > physical axioms or postulates. MWI and within the framework of what Carrol > and Sebens has done this is a ψ-ontology, and this defines the Born rule. If > I am right the degree of ψ-epistemontic nature is mixed. So the intriguing > question we can address is the nature of the Born rule and its tie into the > auxiliary postulates of quantum interpretations. Can a similar demonstration > be made for the Born rule within QuBism, which is what might be called the > dialectic opposite of MWI? > > To take MWI as something literal, as opposed to maybe a working system to > understand QM foundations, is maybe taking things too far. However, it is a > part of some open questions concerning the fundamentals of QM. If MWI, and > more generally postulates of quantum interpretations, are connected to the > Born rule it makes for some interesting things to think about. > > LC > > > QBism is not the dialectical opposite of MWI. This is: > > https://twitter.com/DowkerFay/status/1110683583570759680 > <https://twitter.com/DowkerFay/status/1110683583570759680> > > @philipthrift > > The MWI and this path integral interpretation are both ψ-ontic and are thus > not opposite.
I agree. I would even add that with Feynman path formalism, the reduction of the wave packet does no more make sense. Feynman said it in his little book on light: he consider the Wave reduction as a confusion and appeal to magic (footnote at the end of the second chapter). Bruno > > LC > > -- > You received this message because you are subscribed to the Google Groups > "Everything List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/fe4b02a2-9fcb-4126-b2ad-fb9982f20fc1%40googlegroups.com > > <https://groups.google.com/d/msgid/everything-list/fe4b02a2-9fcb-4126-b2ad-fb9982f20fc1%40googlegroups.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/8BD67B2E-E107-4E12-BEC4-0C3C393E3187%40ulb.ac.be.
