On Fri, Sep 27, 2019 at 06:27:16PM -0700, 'Brent Meeker' via Everything List wrote: > > When I wrote "lowest" I was assuming the context of MWI...not a single > universe. The Bekenstein bound implies that the Hubble volume has an upper > bound for information capacity of it's surface area in Planck units. This > number is around 2.4e106. So as I read Zurek, he thinks this provides a kind > of probability cutoff and branches less probable than 0.4e-106 have zero > probability. And, more to the point, in the limit of large N, where N is the > number of degrees of freedom in the environment the off diagonal terms of the > reduced density matrix go to zero; but this cutoff makes them exactly zero for > N>2.41e106. I haven't figured out many branchings it would take to reach this > number, but with some 1e98 particles it wouldn't take very many. > > Brent
Its an interesting idea, and a plausible mechanism for denying the "no cul-de-sac conjecture" and quantum immortality. However, I do have to wonder the significance of a 2.4x10^106 planck distance quare hubble volume. This surely is a geographical factoid rather than of fundamental significance. -- ---------------------------------------------------------------------------- Dr Russell Standish Phone 0425 253119 (mobile) Principal, High Performance Coders Visiting Senior Research Fellow [email protected] Economics, Kingston University http://www.hpcoders.com.au ---------------------------------------------------------------------------- -- 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/20190929221524.GC31717%40zen.
