On 31 Oct 2014, at 19:37, meekerdb wrote:
On 10/31/2014 7:50 AM, Bruno Marchal wrote:
On 30 Oct 2014, at 19:52, Richard Ruquist wrote:
I envision wave functions as empty shells that can be filled with
energy.
Why not particles? But then you are heading toward Bohm-de Broglie
type of non local hidden variable, which seems to me adding more
mystery than solving one.
Because of quantum theory the interaction energy
may or may not exceed particle-creation level.
If the creation level is exceeded by not very much
all of the interaction energy must go intl one quantum state
else no particle is created.
For many published reasons the state probabilities for creation
are the Born probabilities.
Yet in any interaction if the particle-creation energy is exceeded,
all of the energy that goes into creating the particle goes into
one state.
That must be quantum collapse logic QCL.
I am not convinced, but don't mind to much. I think we have some
agreement on what we disagree on. Of course, in the
computationalist theory, strictly speaking this belongs to open
problems. Just that Everett gives the closest physics to the one we
have to derive from computationalism, if I am correct.
Bruno
I don't think Everett explicitly considered quantum field theory,
but it's not conceptually different. A particle can be created or
not, it's a probabilistic event. So in MWI there are worlds where
the particle is created and worlds where it isn't.
OK.
There are no worlds where a half-particle is created.
That would made quantum filed theory inconsistent.
This is just another example in which everything *nomologically*
possible happens; which is not the same as everything imaginable
(logically consistent) happens.
If computationalism is correct, the nomologically possible would be
the diamond of (one among) the "material hypostases", we have about 8
modal logics (or seven, as "truth" does not really provide a modal
logic), and thus 7 variant of consistency (the diamond).
Quantum mechanics puts lots of constraints on what can happen.
Computer science puts a lot of constraints to what can be dreamed,
especially in the first person plural way.
Bruno
Brent
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