> On 27 Sep 2019, at 21:40, 'Brent Meeker' via Everything List > <[email protected]> wrote: > > > > On 9/26/2019 11:41 PM, Philip Thrift wrote: >> >> >> On Thursday, September 26, 2019 at 7:01:19 PM UTC-5, 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, and I >> suspect quantum interpretations in general. Now that is something I find >> potentially very interesting. >> >> LC >> >> >> >> See if Sean Carroll answers the question of "weighing" worlds: >> >> How much is too Many Worlds, is it just right? >> https://groups.google.com/d/msg/everything-list/E3WLUdnW8jI/MLPg3dAhAgAJ >> <https://groups.google.com/d/msg/everything-list/E3WLUdnW8jI/MLPg3dAhAgAJ> >> >> >> Suppose world W branches (in reality, not in "bookkeeping") to worlds W0 and >> W1. >> >> If reality is pure information (basically purely mathematical bits of 0s and >> 1s), then that sort of "production" seems OK. >> >> But what if W is (or contains) matter. Based on matter contents of W, W0, >> and W1: >> >> If the matter contents of W0 plus W1 combined is greater than the matter >> content of W, how was the extra matter "produced"? >> >> >> Two answers so far: >> >> 1. If an infinity of indiscernible universes already exist at the start and >> are only differentiating/diverging (instead of splitting), then no matter is >> created, all of it was already there. >> >> 2. Differentiation rather that duplication of matter is one possibility, but >> duplication of matter is not logically impossible either. Empirically, we >> have that matter cannot be created, but that is within a single world. > > The "new" matter (and energy and space and information) are discounted by > the probability of their existence. It seems curious to me that the MWI > advocates want to take the wave function ontologically but not the Hilbert > space. From the viewpoint of Hilbert space all the different "worlds" are > just subspaces on which the wave-function of the multiverse can be projected. > A world "splitting" is just the unfolding of a world into two orthogonal > subspaces.
Exactly. Bruno > > Brent > > -- > 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/1ae253d0-314c-c4e7-b4fe-38d0a1a61187%40verizon.net > > <https://groups.google.com/d/msgid/everything-list/1ae253d0-314c-c4e7-b4fe-38d0a1a61187%40verizon.net?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/71831615-BAC4-47E1-A47C-1B4B3DD81885%40ulb.ac.be.
