I still haven't read Carroll's book I downloaded because it's more intellectually enervating to view this argument. Beyond this, let us do a Useless Straw Poll here. If you were forced to choose the shape of reality, between 3 options, which one would you choose?1)One Universe, 42 or 78 billion light years in extent, no next door neighbors.2) The Multiverse. Could be MWI, could be Chaotic Inflation, could be subdomains, could be Tegmark's levels..?3) One super-giant...Infinite CosmosPreferences? Why? Lower tax rates? Low crime rate? Keep out the Riff-raff?
-----Original Message----- From: 'Brent Meeker' via Everything List <[email protected]> To: everything-list <[email protected]> Sent: Thu, Sep 26, 2019 8:35 pm Subject: Re: Sean Carroll's new book On 9/26/2019 5:01 PM, Lawrence Crowell wrote: On Wednesday, September 25, 2019 at 6:54:59 AM UTC-5, John Clark wrote: It seems that nearly everyone on the list has a strong opinion about Sean Carroll's new book, but has anyone other than me actually read it? John K Clark I have not read his book, but I have read his papers and the one he coauthored with Sebbens. I know what he has done. I am definitely agnostic about MWI as I am with all interpretations. Carroll and Sebens has though opened the door to a relationship between the Born rule and MWI, Didn't you read Quantum Theory of the Classical: Quantum Jumps, Born’s Rule, and Objective Classical Reality via Quantum Darwinism by Zurek. arXiv:1807.02092v1 [quant-ph] 5 Jul 2018 He derives the Born rule from what he calls "environment induced supersymmetry". Emergence of the classical world from the quantum substrate of our Universe is a long-standing conundrum. I describe three insights into the transition from quantum to classical that are based on the recognition of the role of the environment. I begin with derivation of preferred sets of states that help define what exists - our everyday classical reality. They emerge as a result of breaking of the unitary symmetry of the Hilbert space which happens when the unitarity of quantum evolutions encounters nonlinearities inherent in the process of amplification – of replicating information. This derivation is accomplished without the usual tools of decoherence, and accounts for the appearance of quantum jumps and emergence of preferred pointer states consistent with those obtained via environment-induced superselection, or einselection. Pointer states obtained this way determine what can happen – define events – without appealing to Born’s rule for probabilities. Therefore, p k = |ψ k | 2 can be now deduced from the entanglement-assisted invariance, or envariance – a symmetry of entangled quantum states. With probabilities at hand one also gains new insights into foundations of quantum statistical physics. Moreover, one can now analyze information flows responsible for decoherence. These information flows explain how perception of objective classical reality arises from the quantum substrate: Effective amplification they represent accounts for the objective existence of the einselected states of macroscopic quantum systems through the redundancy of pointer state records in their environment – through quantum Darwinism. Brent and I suspect quantum interpretations in general. Now that is something I find potentially very interesting. 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/a1122ee9-6bf7-4dd6-80b1-111213a0e8b4%40googlegroups.com. -- 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/7f127b54-7897-591d-87e7-42bda87e2234%40verizon.net. -- 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/1630383382.13201426.1569545435228%40mail.yahoo.com.
