Bruce:
I came across the following brief statement by Goldstein et al:
Many-worlds and relational interpretations of quantum theory
[etc.]
# Adrian Kent writes: "Making scientific sense of Everett’s idea is difficult,
as evidenced by the many and generally incompatible attempts to show how
unitary quantum theory explains the appearance of
a quasiclassical world and the apparent validity of the Born rule and
Copenhagen quantum theory, and evidenced also
by the problems with all of these attempts. There is still nothing close to a
consensus on the
most promising way forward, even among many-worlds enthusiasts. This adds
motivation for developing alternative
ways of formulating quantum theory that have the purported advantages of
many-worlds ideas — realism,
and Lorentz invariance — but describe a single real world, so avoiding both the
conceptual problems and the fantastic
nature of many-worlds ideas. Still, for many, the appeal of many-worlds ideas
evidently persists."
in http://arxiv.org/abs/1408.1944 "Does it Make Sense to Speak of Self-Locating
Uncertainty in the Universal Wave
Function?"
see also http://arxiv.org/abs/0905.0624
and http://arxiv.org/abs/gr-qc/9703089
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