On Tue, Dec 21, 2021 at 9:52 PM John Clark <[email protected]> wrote:
> On Mon, Dec 20, 2021 at 5:28 AM Bruce Kellett <[email protected]> > wrote: > > >*modern collapse theories, such as Flash-GRW, do not have this >> limitation. There is no observer/observed distinction in such theories, and >> they can easily accommodate the idea that everything, including the >> observer, is quantum.* >> > > One thing GRW can't accommodate is Special Relativity, so it's > inconsistent with observation, so it's not yet a quantum interpretation at > all, but Many Worlds had no difficulty in accommodating Special Relativity > from day one. Unlike Many Worlds GRW is not deterministic, it adds a random > term to Schrodinger's equation that only does 4 things: > > 1) It makes the new equation inconsistent with special relativity and thus > observation. > 2) It makes an equation that was already very difficult to solve even more > difficult. > 3) It makes Schrodinger's equation become nondeterministic. > 4) It gets rid of those Many Worlds that so many people hate and fear. > > Maybe someday GRW Will do better but that would require a complete > rewrite, and the prospects are not looking good: > > Impossibility of extending the Ghirardi-Rimini-Weber model to relativistic > particles > <https://journals.aps.org/pra/abstract/10.1103/PhysRevA.103.042216> > Flash-GRW is Lorentz invariant and completely relativistic because it is based on light cone physics. Getting rid of the determinism of the Schrodinger equation is a good thing if you want a theory that is going to predict probabilities. Bruce -- 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/CAFxXSLRDm%2BaqoFnhAbr%2BcapfG-M9wgjwPdC1YYVs%3Dz6dtdAf1g%40mail.gmail.com.
