On 9/12/2019 8:11 PM, Stathis Papaioannou wrote:
On Fri, 13 Sep 2019 at 12:26, Alan Grayson <[email protected] <mailto:[email protected]>> wrote:On Thursday, September 12, 2019 at 11:01:54 AM UTC-6, Alan Grayson wrote: On Thursday, September 12, 2019 at 7:45:22 AM UTC-6, 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/ 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 If you read the link, it's pretty obvious that Carroll believes the many worlds of the MWI, literally exist. AG Carroll also believes that IF the universe is infinite, then there must exist exact copies of universes and ourselves. This is frequently claimed by the MWI true believers, but never, AFAICT, proven, or even plausibly argued. What's the argument for such a claim?Given a sufficient number of trials, the probability that an event that can occur will occur approaches one.
That assumes identical trials. A countably infinite set of universes could all be different.
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