On 05-05-2022 00:04, Brent Meeker wrote:
On 5/4/2022 12:27 PM, smitra wrote:
In
fact, that idea introduces a raft of problems of its own -- what
is
the measure over this infinity of branches? What does it mean to
partition infinity in the ratio of 0.9:0.1? What is the mechanism
(necessarily outside the Schrodinger equation) that achieves this?
That simply means that there is as of yet no good model for QM
without the Born rule.
But there is no mechanism for the Born rule. It is inconsistent with
pure Schroedinger evolution of the wave function. I think the problem
of measures on infinity is overcome if you simply postulate a very
large but finite number of branches to split. Or why not not an
continuum probability and just measure by the density around the
eigenvalue...the measured values are never exact anyway. I don't
these things are wrong or show MWI is inconsistent, but I think they
show it has just moved the problems it purported to solve off to some
unobservable worlds, which is no better than CI.
Born rule is not inconsistent with the Schrödinger equation, it just
tells you that the wavefunction gives you the probability amplitudes.
This is better than the CI, because the CI is inconsistent with the
Schrödinger equation.
The issues with branches etc. are likely just artifacts with making
hidden assumptions about branches. At the end of the day there are only
a finite number of states an observer can be in. If an observer is
modeled as an algorithm, take e.g. Star Trek's Mr. Data then it's clear
that there are only a finite number of bitstrings that can correspond to
the set of all possible things Mr. Data can be aware of.
Saibal
Brent
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