> On 2 May 2018, at 15:51, agrayson2...@gmail.com wrote:
>
>
>
> On Wednesday, May 2, 2018 at 1:31:51 PM UTC, scerir wrote:
> Here below a point made by Asher Peres.
>
> ----------
>
> One can even think of an experiment exhibiting the interference pattern
> between the cat alive and the cat dead.
>
> If such an experiment could indeed be performed, then the phase θ in the state
>
> ψ = 2-1/2[ |live> + exp(iθ)|dead>]
>
> would be meaningful.
>
> One could then resuscitate dead cats in the following way: Take an ensemble
> of dead cats and measure on each one of them the projection operator on state
> ψ.
>
> In 50% of the cases, the state of the cat will become ψ.
>
> Now measure whether the resulting cat in state ψ is alive or dead.
>
> In 50% of the cases, it will turn out alive.
>
> I did not say this is impossible, but only that I don’t know how to construct
> the ψ-measuring machine.
>
>
> Is the "I" you or Ashe? I don't really follow this. If you have time, you can
> expound a bit on what he's trying to say. AG
Belinfante made the same argument. It is elementary quantum mechanics, and the
argument is just above, although you can presented it without using the
exponential. I have not time right now. Like Peres, I don’t see how to build
the {dead+alive, dead-alive} measuring device, but I do see how I can emulate
it with Deutsch quantum universal Turing machine. (Which is Turing emulate and
so arithmetic emulates a quantum universal dovetailer, BTW. But if it is the
winner, that has to be justify from number self-reference logic (as I have
explained, or see my papers).
There is no way to do that in practice, without either progressing a lot in the
art of isolation (of cat and poison) or by entangling oneself directly by a
quantum suicide technic (but here the chance might grow to find yourself
“elsewhere”, dreaming only having resuscitate the cat!).
I think Peres is not quite open to MW, but for me MW is just the QM without
collapse, and the collapse is only a speculation that QM is wrong somewhere.
Grayson, this list is born from people appreciating Everett MW, and open to
generalisation of it, “everything” means that we bet the whole is simpler than
any of its particulars. Indexical Mechanism, used by Everett, entails a theory
of all computations (which, with Church Turing thesis) are provably emulated in
virtue of a tiny fragment of the arithmetical reality.
This adds a new problem: justifying the wave from a sum on all computations,
modalised by the constraints imposed by self-referential correctness.
It actually works retrieving an intuitionist logic for the first person, and a
quantum logic for what it can observed. The advantage is that, thanks to the
truth/assertable distinction, we get both quanta and their extended qualia
(which obeys also type of quantum logic). In both the universal wave/matrix,
and in any universal machinery can look at the consistent histories gluing
dreams into realties, conveying, or not toward reasonable notion of world.
So the SWE/Dirac/DeWitt-Wheeler equation must be retrieved from the sum of the
relative possibilities of the universal machine. You need to know enough of
computer science to know that the notion of universal machine, and
computations, are arithmetical notion, definable entirely in the language of
first order arithmetic.
Many take granted a primitive or primary physical universe or multiverse, but
what can be proved is the existence of a multi-dream in arithmetic, with laws
explaining how the sharable first person plural dreams can converge to local
appearance of “universe”.
I have no clue, nor even opinion if mechanism is true, but it is a fact that
the universal machine, in the sense of Turing, have a quite surprising
theology, in the sense of the Neoplatonists. So we can test the intuitive
consequences (due to our embedding in infinitely many computations) and the
formal consequences, like the appearances of a quantum logic.
Bruno
>
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