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.
